Add UIKit RootModifier support

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 13.48%. Comparing base (e7877fb) to head (e58e5a7).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/OpenSwiftUI/App/App/App.swift	0.00%	7 Missing ⚠️
...iewModifier/PresentedSceneValueInputModifier.swift	0.00%	5 Missing ⚠️
Sources/OpenSwiftUI/App/Scene/SceneStorage.swift	0.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (e7877fb) and HEAD (e58e5a7). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (e7877fb)	HEAD (e58e5a7)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #759       +/-   ##
===========================================
- Coverage   26.69%   13.48%   -13.22%     
===========================================
  Files         643      616       -27     
  Lines       39058    35842     -3216     
===========================================
- Hits        10428     4834     -5594     
- Misses      28630    31008     +2378     

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