Add openURL and userActivity API for Scene

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 218 lines in your changes missing coverage. Please review.
✅ Project coverage is 26.68%. Comparing base (7ddfbb6) to head (d0aadb5).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/OpenSwiftUI/App/Scene/SceneBridge.swift	0.00%	195 Missing ⚠️
...I/Modifier/ViewModifier/IdentifiedPreference.swift	0.00%	23 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #755      +/-   ##
==========================================
- Coverage   26.79%   26.68%   -0.12%     
==========================================
  Files         642      643       +1     
  Lines       38900    39054     +154     
==========================================
- Hits        10425    10420       -5     
- Misses      28475    28634     +159     

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