feat: Support a11y_member_of

[marc2332]

Depends on #1039

• Adds a11y_member_of
• Open dropdowns will close when the focused node is not part of them

[codecov]

Codecov Report

Attention: Patch coverage is 63.96396% with 40 lines in your changes missing coverage. Please review.

Project coverage is 74.93%. Comparing base (cfd70ef) to head (193c8c0).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/renderer/src/accessibility.rs	0.00%	19 Missing ⚠️
crates/testing/src/test_handler.rs	68.42%	12 Missing ⚠️
crates/renderer/src/app.rs	0.00%	4 Missing ⚠️
crates/hooks/src/use_focus.rs	76.92%	3 Missing ⚠️
crates/components/src/dropdown.rs	95.00%	1 Missing ⚠️
crates/state/src/accessibility.rs	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1040      +/-   ##
==========================================
+ Coverage   74.90%   74.93%   +0.02%     
==========================================
  Files         220      220              
  Lines       25731    25831     +100     
==========================================
+ Hits        19275    19356      +81     
- Misses       6456     6475      +19     

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