feat: Only focus focusable nodes

[marc2332]

Part of #844
Closes #843

[codecov]

Codecov Report

Attention: Patch coverage is 97.72727% with 1 line in your changes missing coverage. Please review.

Project coverage is 76.03%. Comparing base (bf1fcd2) to head (faa92d6).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/state/src/accessibility.rs	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #884      +/-   ##
==========================================
+ Coverage   76.01%   76.03%   +0.02%     
==========================================
  Files         205      207       +2     
  Lines       23256    23291      +35     
==========================================
+ Hits        17677    17710      +33     
- Misses       5579     5581       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.