Complete gesture view modifier support

[Kyle-Ye]

Summary

• Implement gesture view modifier responder wiring for masked view gestures, subview gesture propagation, and debug wrapping.
• Add simultaneous and high-priority gesture modifier/combiners, plus optional gesture support.
• Add public View gesture overloads for GestureMask, isEnabled, and named gestures with DocC.
• Add gesture debug tree formatting coverage and compatibility tests.

[augmentcode]

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[codecov]

Codecov Report

❌ Patch coverage is 16.66667% with 205 lines in your changes missing coverage. Please review.
✅ Project coverage is 13.98%. Comparing base (cf9a0d4) to head (ca71b82).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...wiftUICore/Event/Gesture/GestureViewModifier.swift	0.00%	96 Missing ⚠️
...s/OpenSwiftUICore/Event/Gesture/GestureDebug.swift	36.19%	67 Missing ⚠️
...es/OpenSwiftUICore/Event/Gesture/GestureMask.swift	0.00%	30 Missing ⚠️
...penSwiftUICore/Event/Gesture/OptionalGesture.swift	0.00%	10 Missing ⚠️
Sources/OpenSwiftUICore/Util/AnyAttributeFix.swift	60.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (cf9a0d4) and HEAD (ca71b82). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (cf9a0d4)	HEAD (ca71b82)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #905       +/-   ##
===========================================
- Coverage   26.28%   13.98%   -12.31%     
===========================================
  Files         710      669       -41     
  Lines       49705    43702     -6003     
===========================================
- Hits        13063     6110     -6953     
- Misses      36642    37592      +950     

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