Fix touch events not being dispatched to ScrollView's children when they overflow content container (#49855)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49855

Changelog: [IOS][FIXED] - Fixed touch events not being dispatched to ScrollView's children when they overflow the content container

Closes https://github.com/facebook/react-native/issues/47740.

Changes the ScrollView's container view to be `RCTViewComponentView` instead of `UIView` and sets custom layout metrics to it in a way that it will propagate touch events to all children, even if they overflow its bounds.

Reviewed By: sammy-SC

Differential Revision: D70619894

fbshipit-source-id: 348a1a369489d5208d6037c8d76b223c4ab2d5f7