Settings Sync throttling unnecessarily

[jspiro]

Issue Type: Bug

When you are scrolling through your themes, apparently it saves the current theme you're testing before you've hit return to save it. If you do this for a while, settings sync discontinues syncing due to rate limit (which is understandable).

1. Themes shouldn't be saved until the dialog is dismissed or you hit return, solving the issue
2. Settings Sync should have a button to resume syncing or try again, or at least tell you how and when you can resume

VS Code version: Code 1.51.1 (e5a624b, 2020-11-11T01:11:34.018Z)
OS version: Darwin x64 20.1.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz (16 x 2300)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled webgl: enabled webgl2: enabled
Load (avg)	2, 3, 3
Memory (System)	64.00GB (10.48GB free)
Process Argv	--crash-reporter-id f4ee93fd-4d43-48b8-b803-42688ee2a82e
Screen Reader	no
VM	0%

Extensions (91)

Extension	Author (truncated)	Version
Bookmarks	ale	11.4.0
spectrum-vscode-icons	ale	0.1.0
angitignored	AnA	1.2.18
atlascode	atl	2.8.4
coffeescript-jsdoc	bam	0.2.2
theme-verdandi	be5	2.0.1
vscode-custom-css	be5	4.0.0
touch-bar-display	bla	1.4.1
better-toml	bun	0.3.2
nebula-theme	Chi	1.3.2
path-intellisense	chr	2.3.0
regex	chr	0.2.0
gitignore	cod	0.6.0
disableligatures	Coe	0.0.10
log-and-return	dar	0.0.1
vscode-markdownlint	Dav	0.37.2
vscode-coffeescript-snippets	din	0.0.2
xml	Dot	2.5.1
vscode-coffeescript-preview	dre	1.0.1
gitlens	eam	11.0.1
vscode-coffeescript-eval	ehe	1.0.0
vscode-great-icons	emm	2.1.61
vsc-material-theme	Equ	33.0.0
vsc-material-theme-icons	equ	1.2.0
prettier-vscode	esb	5.7.2
font-switcher	eva	3.1.0
filter-line	eve	2.0.1
vscode-open-in-finder	fab	1.1.8
php-intellisense	fel	2.3.14
file-icons	fil	1.0.27
shell-format	fox	7.0.1
vscode-pull-request-github	Git	0.21.0
go	gol	0.18.1
terraform	has	2.3.0
toml-formatter	ice	0.0.3
jenkinsfile-support	ivo	1.1.0
search-editor-apply-changes	jak	0.1.1
vscode-codeowners	jas	1.1.1
vscode-peacock	joh	3.8.0
vscode-colorize	kam	0.8.17
voodoo	lia	0.10.0
coffeelinter	lky	1.4.0
vscode-smart-column-indenter	lmc	0.0.13
fish-ide	lun	0.4.0
bash-ide-vscode	mad	1.11.0
code-groovy	mar	0.1.2
rainbow-csv	mec	1.7.1
vscode-easy-coffeescript	mkl	1.2.0
vscode-docker	ms-	1.8.0
vscode-kubernetes-tools	ms-	1.2.1
python	ms-	2020.11.367453362
jupyter	ms-	2020.11.358541065
remote-containers	ms-	0.148.1
atom-keybindings	ms-	3.0.9
mono-debug	ms-	0.16.2
vsliveshare	ms-	1.0.3206
back-n-forth	nic	3.1.0
vscode-groovy-lint	Nic	1.3.0
vscode-yaml-sort	Pas	2.7.2
material-icon-theme	PKi	4.4.0
vscode-css-peek	pra	4.0.0
coffeescript-formatter	prp	1.0.1
java	red	0.70.0
vscode-yaml	red	0.12.0
synthwave-vscode	Rob	0.1.8
fish-vscode	sky	0.2.1
vscode-iced-coffeescript-preview	sta	1.0.6
code-spell-checker	str	1.9.4
tabnine-vscode	Tab	3.1.11
ayu	tea	0.20.1
shellcheck	tim	0.12.1
sort-lines	Tyr	1.9.0
sensitive-replace	vil	0.1.1
learn-vim	vin	0.0.23
vscodeintellicode	Vis	1.2.10
vscode-java-debug	vsc	0.29.0
vscode-java-dependency	vsc	0.14.0
vscode-java-pack	vsc	0.10.0
vscode-java-test	vsc	0.26.0
vscode-maven	vsc	0.25.0
vim	vsc	1.17.1
CoffeeScript-extension-pack	wal	0.0.1
vscode-todo-highlight	way	1.0.4
change-case	wma	1.0.0
JavaScriptSnippets	xab	1.8.0
local-history	xyz	1.8.1
FilterText	yhi	0.0.15
coffeescript-support	yor	0.3.0
markdown-all-in-one	yzh	3.4.0
file-size	zh9	1.0.0
html-css-class-completion	Zig	1.19.0

(80 theme extensions excluded)

[sandy081]

/duplicate

#110817
#91286