Improve interoperability with native UI frameworks#202

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backend_interop

Commits on Jun 26, 2025

Introduce 'inspect' modifiers for accessing underlying native widgets
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Commits on Jul 10, 2025

Bump Apple platform workflows to Xcode 16.3/Swift 6.1 to fix xcodebuild
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Create ...Representable protocol for each b-end (fix ui/appkit ones)
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