feat(hosting): integrate hit-test handling and diagnostics

[Kyle-Ye]

Summary

• Route UIKit gesture hit tests through hosting views while preserving hits on foreign subviews, and correct the Swift import of the current hit-test context.
• Connect UIKit touch events and AppKit left mouse clicks to hit-test diagnostics while avoiding duplicate output from nested hosting views.
• Register the AppKit event monitor when hit-test debugging is enabled and remove it when the hosting view is deinitialized.

Validation: Scoped UIKit type checking, four AppKit monitor lifecycle checks, Swift parsing, and whitespace checks passed.

[tuist]

🛠️ Tuist Run Report 🛠️

Tests 🧪

Scheme	Status	Cache hit rate	Tests	Skipped	Ran	Commit
OpenSwiftUI	✅	0 %	1198	0	1198	3bcc57b6d

Builds 🔨

Scheme	Status	Duration	Commit
OpenSwiftUI	✅	1m 15s	3bcc57b6d

[codecov]

Codecov Report

❌ Patch coverage is 16.66667% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 29.65%. Comparing base (24b736d) to head (d90f8c6).

Files with missing lines	Patch %	Lines
...ntegration/Hosting/AppKit/View/NSHostingView.swift	16.66%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1077      +/-   ##
==========================================
- Coverage   29.65%   29.65%   -0.01%     
==========================================
  Files         802      802              
  Lines       63274    63285      +11     
==========================================
+ Hits        18763    18764       +1     
- Misses      44511    44521      +10     

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