- Fixes bug #59272: [xtro] Report !missing-protocol-conformance! when protocols are defined in categories
(https://bugzilla.xamarin.com/show_bug.cgi?id=59272)
- Implemented missing protocol conformances based on tool's new data.
- Remove Internal check from VisitObjCCategoryDecl and VisitObjCInterfaceDecl
- Ignore previewItemTitle failure (normal since it's optional)
- Only skip UIStateRestoring for subclasses of UIViewController
- Ignore UIStateRestoring test on watchOS (UIViewController not available)
- Remove protocol conformances that generated wrong availability attributes (https://github.com/xamarin/xamarin-macios/issues/3213)
- Avoid new virtual or virtual when adding protocol conformance (https://github.com/xamarin/xamarin-macios/issues/3217)