Color selector should work inside cascade layers @layer {}

Issue Type: Bug

Expected Behavior:

Colors in cascade layer delcarations should show the color picker when hovering
A preview of the color should appear inline with the color expression

Actual Behavior:

Neither of the above occur

VS Code version: Code 1.69.2 (Universal) (3b889b090b5ad5793f524b5d1d39fda662b96a2a, 2022-07-18T16:12:57.074Z) OS version: Darwin arm64 21.6.0 Restricted Mode: No

System Info

|Item|Value| |---|---| |CPUs|Apple M1 Pro (10 x 24)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: disabled_off
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
metal: disabled_off
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_renderer: enabled_on
video_decode: enabled
video_encode: enabled
webgl: enabled
webgl2: enabled| |Load (avg)|2, 3, 3| |Memory (System)|32.00GB (15.00GB free)| |Process Argv|--crash-reporter-id f431a099-00ad-4bab-a13a-92ba4d461919| |Screen Reader|no| |VM|0%|

Extensions (47)

Extension|Author (truncated)|Version ---|---|--- vscode-ron|a5h|0.9.0 vscode-css-formatter|aes|1.0.2 comment-tagged-templates|bie|0.3.1 rails|bun|0.17.8 vscode-gemfile|bun|0.4.2 better-toml|bun|0.3.2 gltf-vscode|ces|2.3.16 npm-intellisense|chr|1.4.2 hex-to-rgba|dak|1.0.0 dart-code|Dar|3.44.0 vscode-eslint|dba|2.2.6 vscode-html-css|ecm|1.13.1 vsc-material-theme|Equ|33.5.0 vsc-material-theme-icons|equ|2.3.1 shell-format|fox|7.2.2 godot-tools|gee|1.3.1 remotehub|Git|0.38.0 todo-tree|Gru|0.0.215 blender-development|Jac|0.0.17 svg|joc|1.4.19 rainbow-csv|mec|2.4.0 vscode-azureappservice|ms-|0.24.3 vscode-azureresourcegroups|ms-|0.5.5 vscode-docker|ms-|1.22.1 vscode-logicapps|ms-|1.1.9 csharp|ms-|1.25.0 python|ms-|2022.10.1 vscode-pylance|ms-|2022.7.40 azure-account|ms-|0.11.0 cpptools|ms-|1.11.4 live-server|ms-|0.2.13 remote-repositories|ms-|0.16.0 vsliveshare|ms-|1.0.5669 fix-json|oli|0.1.2 prisma|Pri|4.1.0 java|red|1.9.0 vscode-xml|red|0.21.2022062916 r|REd|2.5.2 rust-analyzer|rus|0.3.1148 vscode-stylelint|sty|1.2.2 wav-preview|suk|2.0.4 svelte-vscode|sve|105.20.0 vscode-java-debug|vsc|0.43.0 vscode-java-pack|vsc|0.25.0 vscode-maven|vsc|0.37.0 volar|Vue|0.39.4 change-case|wma|1.0.0 (2 theme extensions excluded)

A/B Experiments

``` vsliv368:30146709 vsreu685:30147344 python383:30185418 vspor879:30202332 vspor708:30202333 vspor363:30204092 vslsvsres303:30308271 pythonvspyl392:30443607 vserr242:30382549 pythontb:30283811 vsjup518:30340749 pythonptprofiler:30281270 vshan820:30294714 vstes263:30335439 vscorecescf:30445987 pythondataviewer:30285071 vscod805:30301674 binariesv615:30325510 bridge0708:30335490 bridge0723:30353136 vsaa593cf:30376535 vsc1dst:30438360 pythonvs932:30410667 wslgetstarted:30449410 vscscmwlcmt:30465135 cppdebug:30492333 vscaat:30438848 pylanb8912cf:30529770 vsclangdf:30486550 c4g48928:30535728 ```

microsoft / vscode

Color selector should work inside cascade layers @layer {} #156848