Doc panel improvements

[vitvakatu]

Pull Request Description

Fixes parts of #8135

• Fixed rendering of the documentation panel when no entry is selected.
• Multiple improvements of tags in the documentation panel:
  • Group color for GROUP tag
  • Custom styling for DEPRECATED, UNSTABLE, and ADVANCED tags.
  • Sorting
  • Collapsing tags that exceed one line with a button
  • Filtering out some tags (ICON and TEXT_ONLY for now)
• Filtering out private items from the documentation
• Fixing group colors (was incorrectly assuming unique group names) and fallback color (was incorrectly replacing every character in the name with - before hashing, which was hilarious).
• Fixing ComponentBrowser demo scene.
• Minor fixes for mock database in demo scenes (removed duplicated entry, added an additional one for testing tags)

documentation.improvements.mp4

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• The documentation has been updated, if necessary.
• Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• All code follows the
  Scala,
  Java,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• All code has been tested:
  • Unit tests have been written where possible.
  • If GUI codebase was changed, the GUI was tested when built using ./run ide build.

[somebody1234]

minor nits (?)