global styles slotfill

[rinkalpagdar]

What?

Fixes #48068

How?

This PR introduces a new SlotFill location in the global styles section.

Testing Instructions

1. Checkout this branch and build
2. Add the sample code below in your theme or plugin
3. Confirm that slot appears as seen in the screenshot

import { registerPlugin } from '@wordpress/plugins';
import { HelpContentSlot } from '@wordpress/edit-site';

// Define a basic component to render the help content inside the slot.
const HelpContent = () => (
	<HelpContentSlot
		renderContent={ () => (
			<p>This is your help content displayed in the slot.</p>
		) }
	/>
);

// Register the plugin.
registerPlugin( 'my-help-content-plugin', {
	render: HelpContent,
} );

Screenshots or screencast

[github-actions]

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Co-authored-by: carolinan <poena@git.wordpress.org>
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[github-actions]

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[carolinan]

Hi @rinkalpagdar Thank you for working on this issue.
-I am unsure of the name, "HelpContent" since it might be used for other things than contextual help.
I think it may be more suitable to use a name that makes it easer to understand where the slot is?
Also I think there needs to be more discussion about the position of the slot.

[rinkalpagdar]

Hello @carolinan Thanks for the feedback. Can you please suggest the name of the slot? I think the place for the slot would be great above the "browse style" . Please share your thoughts on the same. Thanks!

[ndiego]

Since questions remain in the original issue about whether this slot should be added, naming aside, can we add the isGutenbergPlugin check as Riad describes here?

[carolinan]

I think the place for the slot would be great above the "browse style"

I disagree, because the preview above it shows what you have selected in "Browse style", and I feel strongly that these two elements should not be separated by the slot. But this is my personal opinion.

[rinkalpagdar]

Hello @ndiego Thanks for the feedback. I have added the isGutenbergPlugin check.
Thanks!