[release/8.0.1xx-xcode15.1] [UIKit] Fix broken UITrait bindings. Fixes #19410.

[vs-mobiletools-engineering-service2]

There are a few issues with the bindings, because the typedef UITrait in the headers is defined like this:

typedef Class<UITraitDefinition> UITrait

which means: "A Class that implements the UITraitDefinition protocol", and not "The UITraitDefinition" protocol", which is how it was bound.

This means the corresponding bindings are incorrect, so fix them. In some cases it's not possible to fix the API, so new ones had to be implemented in order to maintain backwards compatibility.

Fixes #19410.

Backport of #19411

[vs-mobiletools-engineering-service2]

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• xamarin.ios-17.0.0.132.pkg
• xamarin.mac-9.0.0.132.pkg

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❗ API diff for current PR / commit (Breaking changes)

Legacy Xamarin (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)

• iOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• tvOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• watchOS (no change detected)
• macOS (no change detected)

.NET (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)

• iOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• tvOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• MacCatalyst: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• macOS: (empty diff detected)

❗ API diff vs stable (Breaking changes)

Legacy Xamarin (No breaking changes)

• iOS: vsdrops gist (No breaking changes)
• tvOS: vsdrops gist (No breaking changes)
• watchOS: vsdrops gist (No breaking changes)
• macOS: vsdrops gist (No breaking changes)

.NET (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)

• iOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• tvOS: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• MacCatalyst: vsdrops gist (:heavy_exclamation_mark: Breaking changes :heavy_exclamation_mark:)
• macOS: (empty diff detected)
• Microsoft.iOS vs Microsoft.MacCatalyst: vsdrops gist

Legacy Xamarin (stable) vs .NET

• iOS: vsdrops gist
• tvOS: vsdrops gist
• macOS: vsdrops gist

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