Add AppearanceActionModifierTests

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 21.21%. Comparing base (3dbe1d3) to head (5bf0035).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/OpenSwiftUICore/View/IDView.swift	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #206      +/-   ##
==========================================
+ Coverage   21.19%   21.21%   +0.02%     
==========================================
  Files         305      300       -5     
  Lines       12665    12593      -72     
==========================================
- Hits         2684     2672      -12     
+ Misses       9981     9921      -60     

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