Adds placeholder when feature image is in use

[draganescu]

What?

Advances #40156. Adds featured image placeholder.

Why?

When featured image is in use the placeholder actions for the cover block
don't function well.

How?

Copied the placeholder image from the post featured image block.

Testing Instructions

1. Create a post
2. Insert a cover block
3. Tpggle ON use fetured image from the toolbar
4. Notice the placeholder

Screenshots or screencast

[draganescu]

The goal is to approach this iin a step by step fashion, this being step 1 :D Ideally when we add feature image support to any block (e.g. image) it includes the placeholder graphic automagically. We'll get there.

[github-actions]

Size Change: +179 B (0%)

Total Size: 1.24 MB

Filename	Size	Change
build/block-editor/index.min.js	151 kB	+127 B (0%)
build/block-library/blocks/cover/editor-rtl.css	676 B	+130 B (+24%)	🚨
build/block-library/blocks/cover/editor.css	680 B	+133 B (+24%)	🚨
build/block-library/blocks/file/style-rtl.css	252 B	-3 B (-1%)
build/block-library/blocks/file/style.css	253 B	-2 B (-1%)
build/block-library/blocks/search/style-rtl.css	402 B	+5 B (+1%)
build/block-library/blocks/search/style.css	403 B	+5 B (+1%)
build/block-library/editor-rtl.css	10.3 kB	+81 B (+1%)
build/block-library/editor.css	10.3 kB	+78 B (+1%)
build/block-library/index.min.js	181 kB	+264 B (0%)
build/block-library/style-rtl.css	11.6 kB	+4 B (0%)
build/block-library/style.css	11.6 kB	+4 B (0%)
build/components/index.min.js	227 kB	-650 B (0%)
build/components/style-rtl.css	13.9 kB	-2 B (0%)
build/components/style.css	13.9 kB	-4 B (0%)
build/compose/index.min.js	11.7 kB	+10 B (0%)
build/core-data/index.min.js	14.6 kB	+2 B (0%)
build/edit-post/style-rtl.css	7.08 kB	-1 B (0%)
build/edit-post/style.css	7.08 kB	-2 B (0%)

ℹ️ View Unchanged

Filename	Size
build/a11y/index.min.js	993 B
build/annotations/index.min.js	2.75 kB
build/api-fetch/index.min.js	2.27 kB
build/autop/index.min.js	2.15 kB
build/blob/index.min.js	487 B
build/block-directory/index.min.js	6.51 kB
build/block-directory/style-rtl.css	1.01 kB
build/block-directory/style.css	1.01 kB
build/block-editor/default-editor-styles-rtl.css	378 B
build/block-editor/default-editor-styles.css	378 B
build/block-editor/style-rtl.css	14.6 kB
build/block-editor/style.css	14.6 kB
build/block-library/blocks/archives/editor-rtl.css	61 B
build/block-library/blocks/archives/editor.css	60 B
build/block-library/blocks/archives/style-rtl.css	65 B
build/block-library/blocks/archives/style.css	65 B
build/block-library/blocks/audio/editor-rtl.css	150 B
build/block-library/blocks/audio/editor.css	150 B
build/block-library/blocks/audio/style-rtl.css	111 B
build/block-library/blocks/audio/style.css	111 B
build/block-library/blocks/audio/theme-rtl.css	125 B
build/block-library/blocks/audio/theme.css	125 B
build/block-library/blocks/avatar/editor-rtl.css	116 B
build/block-library/blocks/avatar/editor.css	116 B
build/block-library/blocks/avatar/style-rtl.css	59 B
build/block-library/blocks/avatar/style.css	59 B
build/block-library/blocks/block/editor-rtl.css	161 B
build/block-library/blocks/block/editor.css	161 B
build/block-library/blocks/button/editor-rtl.css	445 B
build/block-library/blocks/button/editor.css	445 B
build/block-library/blocks/button/style-rtl.css	560 B
build/block-library/blocks/button/style.css	560 B
build/block-library/blocks/buttons/editor-rtl.css	292 B
build/block-library/blocks/buttons/editor.css	292 B
build/block-library/blocks/buttons/style-rtl.css	275 B
build/block-library/blocks/buttons/style.css	275 B
build/block-library/blocks/calendar/style-rtl.css	207 B
build/block-library/blocks/calendar/style.css	207 B
build/block-library/blocks/categories/editor-rtl.css	84 B
build/block-library/blocks/categories/editor.css	83 B
build/block-library/blocks/categories/style-rtl.css	79 B
build/block-library/blocks/categories/style.css	79 B
build/block-library/blocks/code/style-rtl.css	103 B
build/block-library/blocks/code/style.css	103 B
build/block-library/blocks/code/theme-rtl.css	124 B
build/block-library/blocks/code/theme.css	124 B
build/block-library/blocks/columns/editor-rtl.css	108 B
build/block-library/blocks/columns/editor.css	108 B
build/block-library/blocks/columns/style-rtl.css	406 B
build/block-library/blocks/columns/style.css	406 B
build/block-library/blocks/comment-author-avatar/editor-rtl.css	125 B
build/block-library/blocks/comment-author-avatar/editor.css	125 B
build/block-library/blocks/comment-content/style-rtl.css	92 B
build/block-library/blocks/comment-content/style.css	92 B
build/block-library/blocks/comment-template/style-rtl.css	127 B
build/block-library/blocks/comment-template/style.css	127 B
build/block-library/blocks/comments-pagination-numbers/editor-rtl.css	123 B
build/block-library/blocks/comments-pagination-numbers/editor.css	121 B
build/block-library/blocks/comments-pagination/editor-rtl.css	222 B
build/block-library/blocks/comments-pagination/editor.css	209 B
build/block-library/blocks/comments-pagination/style-rtl.css	235 B
build/block-library/blocks/comments-pagination/style.css	231 B
build/block-library/blocks/comments-title/editor-rtl.css	75 B
build/block-library/blocks/comments-title/editor.css	75 B
build/block-library/blocks/comments/editor-rtl.css	95 B
build/block-library/blocks/comments/editor.css	95 B
build/block-library/blocks/cover/style-rtl.css	1.56 kB
build/block-library/blocks/cover/style.css	1.56 kB
build/block-library/blocks/embed/editor-rtl.css	293 B
build/block-library/blocks/embed/editor.css	293 B
build/block-library/blocks/embed/style-rtl.css	417 B
build/block-library/blocks/embed/style.css	417 B
build/block-library/blocks/embed/theme-rtl.css	124 B
build/block-library/blocks/embed/theme.css	124 B
build/block-library/blocks/file/editor-rtl.css	300 B
build/block-library/blocks/file/editor.css	300 B
build/block-library/blocks/file/view.min.js	353 B
build/block-library/blocks/freeform/editor-rtl.css	2.44 kB
build/block-library/blocks/freeform/editor.css	2.44 kB
build/block-library/blocks/gallery/editor-rtl.css	961 B
build/block-library/blocks/gallery/editor.css	964 B
build/block-library/blocks/gallery/style-rtl.css	1.51 kB
build/block-library/blocks/gallery/style.css	1.51 kB
build/block-library/blocks/gallery/theme-rtl.css	122 B
build/block-library/blocks/gallery/theme.css	122 B
build/block-library/blocks/group/editor-rtl.css	333 B
build/block-library/blocks/group/editor.css	333 B
build/block-library/blocks/group/style-rtl.css	57 B
build/block-library/blocks/group/style.css	57 B
build/block-library/blocks/group/theme-rtl.css	78 B
build/block-library/blocks/group/theme.css	78 B
build/block-library/blocks/heading/style-rtl.css	76 B
build/block-library/blocks/heading/style.css	76 B
build/block-library/blocks/html/editor-rtl.css	332 B
build/block-library/blocks/html/editor.css	333 B
build/block-library/blocks/image/editor-rtl.css	738 B
build/block-library/blocks/image/editor.css	737 B
build/block-library/blocks/image/style-rtl.css	529 B
build/block-library/blocks/image/style.css	535 B
build/block-library/blocks/image/theme-rtl.css	124 B
build/block-library/blocks/image/theme.css	124 B
build/block-library/blocks/latest-comments/style-rtl.css	284 B
build/block-library/blocks/latest-comments/style.css	284 B
build/block-library/blocks/latest-posts/editor-rtl.css	199 B
build/block-library/blocks/latest-posts/editor.css	198 B
build/block-library/blocks/latest-posts/style-rtl.css	463 B
build/block-library/blocks/latest-posts/style.css	462 B
build/block-library/blocks/list/style-rtl.css	88 B
build/block-library/blocks/list/style.css	88 B
build/block-library/blocks/media-text/editor-rtl.css	266 B
build/block-library/blocks/media-text/editor.css	263 B
build/block-library/blocks/media-text/style-rtl.css	493 B
build/block-library/blocks/media-text/style.css	490 B
build/block-library/blocks/more/editor-rtl.css	431 B
build/block-library/blocks/more/editor.css	431 B
build/block-library/blocks/navigation-link/editor-rtl.css	708 B
build/block-library/blocks/navigation-link/editor.css	706 B
build/block-library/blocks/navigation-link/style-rtl.css	115 B
build/block-library/blocks/navigation-link/style.css	115 B
build/block-library/blocks/navigation-submenu/editor-rtl.css	299 B
build/block-library/blocks/navigation-submenu/editor.css	299 B
build/block-library/blocks/navigation-submenu/view.min.js	375 B
build/block-library/blocks/navigation/editor-rtl.css	2.03 kB
build/block-library/blocks/navigation/editor.css	2.04 kB
build/block-library/blocks/navigation/style-rtl.css	1.95 kB
build/block-library/blocks/navigation/style.css	1.94 kB
build/block-library/blocks/navigation/view-modal.min.js	2.78 kB
build/block-library/blocks/navigation/view.min.js	395 B
build/block-library/blocks/nextpage/editor-rtl.css	395 B
build/block-library/blocks/nextpage/editor.css	395 B
build/block-library/blocks/page-list/editor-rtl.css	363 B
build/block-library/blocks/page-list/editor.css	363 B
build/block-library/blocks/page-list/style-rtl.css	175 B
build/block-library/blocks/page-list/style.css	175 B
build/block-library/blocks/paragraph/editor-rtl.css	157 B
build/block-library/blocks/paragraph/editor.css	157 B
build/block-library/blocks/paragraph/style-rtl.css	260 B
build/block-library/blocks/paragraph/style.css	260 B
build/block-library/blocks/post-author/style-rtl.css	175 B
build/block-library/blocks/post-author/style.css	176 B
build/block-library/blocks/post-comments-form/editor-rtl.css	69 B
build/block-library/blocks/post-comments-form/editor.css	69 B
build/block-library/blocks/post-comments-form/style-rtl.css	495 B
build/block-library/blocks/post-comments-form/style.css	495 B
build/block-library/blocks/post-comments/editor-rtl.css	77 B
build/block-library/blocks/post-comments/editor.css	77 B
build/block-library/blocks/post-comments/style-rtl.css	628 B
build/block-library/blocks/post-comments/style.css	628 B
build/block-library/blocks/post-excerpt/editor-rtl.css	73 B
build/block-library/blocks/post-excerpt/editor.css	73 B
build/block-library/blocks/post-excerpt/style-rtl.css	69 B
build/block-library/blocks/post-excerpt/style.css	69 B
build/block-library/blocks/post-featured-image/editor-rtl.css	721 B
build/block-library/blocks/post-featured-image/editor.css	721 B
build/block-library/blocks/post-featured-image/style-rtl.css	153 B
build/block-library/blocks/post-featured-image/style.css	153 B
build/block-library/blocks/post-template/editor-rtl.css	99 B
build/block-library/blocks/post-template/editor.css	98 B
build/block-library/blocks/post-template/style-rtl.css	323 B
build/block-library/blocks/post-template/style.css	323 B
build/block-library/blocks/post-terms/style-rtl.css	73 B
build/block-library/blocks/post-terms/style.css	73 B
build/block-library/blocks/post-title/style-rtl.css	80 B
build/block-library/blocks/post-title/style.css	80 B
build/block-library/blocks/preformatted/style-rtl.css	103 B
build/block-library/blocks/preformatted/style.css	103 B
build/block-library/blocks/pullquote/editor-rtl.css	198 B
build/block-library/blocks/pullquote/editor.css	198 B
build/block-library/blocks/pullquote/style-rtl.css	370 B
build/block-library/blocks/pullquote/style.css	370 B
build/block-library/blocks/pullquote/theme-rtl.css	167 B
build/block-library/blocks/pullquote/theme.css	167 B
build/block-library/blocks/query-pagination-numbers/editor-rtl.css	122 B
build/block-library/blocks/query-pagination-numbers/editor.css	121 B
build/block-library/blocks/query-pagination/editor-rtl.css	221 B
build/block-library/blocks/query-pagination/editor.css	211 B
build/block-library/blocks/query-pagination/style-rtl.css	234 B
build/block-library/blocks/query-pagination/style.css	231 B
build/block-library/blocks/query/editor-rtl.css	369 B
build/block-library/blocks/query/editor.css	369 B
build/block-library/blocks/quote/style-rtl.css	213 B
build/block-library/blocks/quote/style.css	213 B
build/block-library/blocks/quote/theme-rtl.css	223 B
build/block-library/blocks/quote/theme.css	226 B
build/block-library/blocks/read-more/style-rtl.css	132 B
build/block-library/blocks/read-more/style.css	132 B
build/block-library/blocks/rss/editor-rtl.css	202 B
build/block-library/blocks/rss/editor.css	204 B
build/block-library/blocks/rss/style-rtl.css	289 B
build/block-library/blocks/rss/style.css	288 B
build/block-library/blocks/search/editor-rtl.css	165 B
build/block-library/blocks/search/editor.css	165 B
build/block-library/blocks/search/theme-rtl.css	64 B
build/block-library/blocks/search/theme.css	64 B
build/block-library/blocks/separator/editor-rtl.css	146 B
build/block-library/blocks/separator/editor.css	146 B
build/block-library/blocks/separator/style-rtl.css	233 B
build/block-library/blocks/separator/style.css	233 B
build/block-library/blocks/separator/theme-rtl.css	194 B
build/block-library/blocks/separator/theme.css	194 B
build/block-library/blocks/shortcode/editor-rtl.css	474 B
build/block-library/blocks/shortcode/editor.css	474 B
build/block-library/blocks/site-logo/editor-rtl.css	759 B
build/block-library/blocks/site-logo/editor.css	759 B
build/block-library/blocks/site-logo/style-rtl.css	192 B
build/block-library/blocks/site-logo/style.css	192 B
build/block-library/blocks/site-tagline/editor-rtl.css	86 B
build/block-library/blocks/site-tagline/editor.css	86 B
build/block-library/blocks/site-title/editor-rtl.css	84 B
build/block-library/blocks/site-title/editor.css	84 B
build/block-library/blocks/social-link/editor-rtl.css	177 B
build/block-library/blocks/social-link/editor.css	177 B
build/block-library/blocks/social-links/editor-rtl.css	674 B
build/block-library/blocks/social-links/editor.css	673 B
build/block-library/blocks/social-links/style-rtl.css	1.37 kB
build/block-library/blocks/social-links/style.css	1.36 kB
build/block-library/blocks/spacer/editor-rtl.css	332 B
build/block-library/blocks/spacer/editor.css	332 B
build/block-library/blocks/spacer/style-rtl.css	48 B
build/block-library/blocks/spacer/style.css	48 B
build/block-library/blocks/table/editor-rtl.css	504 B
build/block-library/blocks/table/editor.css	504 B
build/block-library/blocks/table/style-rtl.css	625 B
build/block-library/blocks/table/style.css	625 B
build/block-library/blocks/table/theme-rtl.css	188 B
build/block-library/blocks/table/theme.css	188 B
build/block-library/blocks/tag-cloud/style-rtl.css	226 B
build/block-library/blocks/tag-cloud/style.css	227 B
build/block-library/blocks/template-part/editor-rtl.css	149 B
build/block-library/blocks/template-part/editor.css	149 B
build/block-library/blocks/template-part/theme-rtl.css	101 B
build/block-library/blocks/template-part/theme.css	101 B
build/block-library/blocks/text-columns/editor-rtl.css	95 B
build/block-library/blocks/text-columns/editor.css	95 B
build/block-library/blocks/text-columns/style-rtl.css	166 B
build/block-library/blocks/text-columns/style.css	166 B
build/block-library/blocks/verse/style-rtl.css	87 B
build/block-library/blocks/verse/style.css	87 B
build/block-library/blocks/video/editor-rtl.css	561 B
build/block-library/blocks/video/editor.css	563 B
build/block-library/blocks/video/style-rtl.css	173 B
build/block-library/blocks/video/style.css	173 B
build/block-library/blocks/video/theme-rtl.css	124 B
build/block-library/blocks/video/theme.css	124 B
build/block-library/common-rtl.css	993 B
build/block-library/common.css	990 B
build/block-library/reset-rtl.css	478 B
build/block-library/reset.css	478 B
build/block-library/theme-rtl.css	689 B
build/block-library/theme.css	694 B
build/block-serialization-default-parser/index.min.js	1.12 kB
build/block-serialization-spec-parser/index.min.js	2.83 kB
build/blocks/index.min.js	47.1 kB
build/customize-widgets/index.min.js	11.2 kB
build/customize-widgets/style-rtl.css	1.4 kB
build/customize-widgets/style.css	1.4 kB
build/data-controls/index.min.js	663 B
build/data/index.min.js	7.98 kB
build/date/index.min.js	32 kB
build/deprecated/index.min.js	518 B
build/dom-ready/index.min.js	336 B
build/dom/index.min.js	4.69 kB
build/edit-navigation/index.min.js	16 kB
build/edit-navigation/style-rtl.css	4.05 kB
build/edit-navigation/style.css	4.05 kB
build/edit-post/classic-rtl.css	546 B
build/edit-post/classic.css	547 B
build/edit-post/index.min.js	30.3 kB
build/edit-site/index.min.js	47.9 kB
build/edit-site/style-rtl.css	7.73 kB
build/edit-site/style.css	7.71 kB
build/edit-widgets/index.min.js	16.4 kB
build/edit-widgets/style-rtl.css	4.4 kB
build/edit-widgets/style.css	4.4 kB
build/editor/index.min.js	38.5 kB
build/editor/style-rtl.css	3.71 kB
build/editor/style.css	3.7 kB
build/element/index.min.js	4.3 kB
build/escape-html/index.min.js	548 B
build/format-library/index.min.js	6.62 kB
build/format-library/style-rtl.css	571 B
build/format-library/style.css	571 B
build/hooks/index.min.js	1.66 kB
build/html-entities/index.min.js	454 B
build/i18n/index.min.js	3.79 kB
build/is-shallow-equal/index.min.js	535 B
build/keyboard-shortcuts/index.min.js	1.8 kB
build/keycodes/index.min.js	1.41 kB
build/list-reusable-blocks/index.min.js	1.75 kB
build/list-reusable-blocks/style-rtl.css	835 B
build/list-reusable-blocks/style.css	835 B
build/media-utils/index.min.js	2.9 kB
build/notices/index.min.js	957 B
build/nux/index.min.js	2.07 kB
build/nux/style-rtl.css	744 B
build/nux/style.css	741 B
build/plugins/index.min.js	1.98 kB
build/preferences-persistence/index.min.js	2.23 kB
build/preferences/index.min.js	1.32 kB
build/primitives/index.min.js	949 B
build/priority-queue/index.min.js	628 B
build/react-i18n/index.min.js	704 B
build/react-refresh-entry/index.min.js	8.44 kB
build/react-refresh-runtime/index.min.js	7.31 kB
build/redux-routine/index.min.js	2.69 kB
build/reusable-blocks/index.min.js	2.24 kB
build/reusable-blocks/style-rtl.css	256 B
build/reusable-blocks/style.css	256 B
build/rich-text/index.min.js	11.1 kB
build/server-side-render/index.min.js	1.61 kB
build/shortcode/index.min.js	1.52 kB
build/token-list/index.min.js	668 B
build/url/index.min.js	1.99 kB
build/vendors/react-dom.min.js	38.5 kB
build/vendors/react.min.js	4.34 kB
build/viewport/index.min.js	1.08 kB
build/warning/index.min.js	280 B
build/widgets/index.min.js	7.2 kB
build/widgets/style-rtl.css	1.16 kB
build/widgets/style.css	1.16 kB
build/wordcount/index.min.js	1.07 kB

_{compressed-size-action}

[scruffian]

Lets bring this in

[annezazu]

@WordPress/gutenberg-design as a heads up considering the work around general image block placeholders #41142