Add ShapeStyledDisplayList support

[Kyle-Ye]

Image will render on screen. But the containerPosition is not correct.

struct AsyncImageExample: View {
    var body: some View {
        AsyncImage(url: URL(string: "https://picsum.photos/200"))
    }
}

[augmentcode]

🤖 Augment PR Summary

Summary: This PR starts wiring up display-list rendering for shape-styled leaf views, including initial (WIP) support for interpolator-backed layers.

Changes:

• Expanded DisplayList.InterpolatorGroup from an empty stub to a structured (still WIP) type and added placeholder ORB-related display-list types.
• Updated RendererEffect to construct GeometryProxy with a stable owner identifier and a safer UInt32 seed conversion.
• Implemented a new ShapeStyledDisplayList update path that builds a DisplayList from a view’s foreground/background shapes and style pack.
• Introduced _ShapeStyle_RenderedShape and _ShapeStyle_RenderedLayers infrastructure to assemble styled items, effects, and (future) interpolator layers.
• Refined _ShapeStyle_LayerID typing and began integrating _ShapeStyle_InterpolatorGroup with DisplayList.InterpolatorGroup.

Technical Notes: Many entry points are intentionally marked WIP via _openSwiftUIUnimplementedWarning()/Failure() while the rendering and interpolator plumbing is brought online.

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[augmentcode]

Review completed. 1 suggestions posted.

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[augmentcode]

RenderedLayers.commit currently calls _openSwiftUIUnimplementedFailure() for the .items case, which looks reachable whenever the shape produces multiple layers (e.g. background + foreground when V.hasBackground == true, like Image.Resolved). That means display-list generation can trap at runtime in normal rendering paths.

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 230 lines in your changes missing coverage. Please review.
✅ Project coverage is 14.00%. Comparing base (11fafa7) to head (4793eb4).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...tUICore/Shape/ShapeStyle/ShapeStyleRendering.swift	0.00%	158 Missing ⚠️
...tUICore/Shape/ShapeStyle/ShapeStyledLeafView.swift	0.00%	66 Missing ⚠️
...enSwiftUICore/Render/DisplayList/DisplayList.swift	0.00%	4 Missing ⚠️
...tUICore/Render/RendererEffect/RendererEffect.swift	0.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (11fafa7) and HEAD (4793eb4). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (11fafa7)	HEAD (4793eb4)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #732       +/-   ##
===========================================
- Coverage   28.12%   14.00%   -14.13%     
===========================================
  Files         603      577       -26     
  Lines       36955    34341     -2614     
===========================================
- Hits        10394     4809     -5585     
- Misses      26561    29532     +2971     

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