Update UIHosting implementation to fix HostingExample example

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 2.19780% with 267 lines in your changes missing coverage. Please review.

Project coverage is 22.16%. Comparing base (866bb21) to head (9472ae3).
Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
.../OpenSwiftUICore/View/Graph/ViewRendererHost.swift	0.00%	139 Missing ⚠️
.../Environment/EnvironmentKeyTransformModifier.swift	0.00%	19 Missing ⚠️
...SwiftUICore/View/Graph/EmptyViewRendererHost.swift	0.00%	19 Missing ⚠️
...tform/HostingViewTransparentBackgroundReason.swift	0.00%	15 Missing ⚠️
Sources/OpenSwiftUI/View/List/EditMode.swift	0.00%	14 Missing ⚠️
Sources/OpenSwiftUICore/View/Graph/ViewGraph.swift	0.00%	12 Missing ⚠️
...iftUICore/Data/Environment/EnvironmentValues.swift	8.33%	11 Missing ⚠️
...gration/Hosting/Platform/HostingViewProtocol.swift	0.00%	10 Missing ⚠️
Sources/OpenSwiftUICore/Graph/GraphInputs.swift	0.00%	10 Missing ⚠️
Sources/OpenSwiftUI/CoreGlue/OpenSwiftUIGlue.swift	0.00%	4 Missing ⚠️
... and 8 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #187      +/-   ##
==========================================
- Coverage   22.46%   22.16%   -0.31%     
==========================================
  Files         295      299       +4     
  Lines       10972    11141     +169     
==========================================
+ Hits         2465     2469       +4     
- Misses       8507     8672     +165     

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