Include `packages/react-native/Libraries` path in ReactApple snapshot (#56060)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/56060

There are Objective-C files located in the `packages/react-native/Libraries` paths. This diff modifies the config to tell doxygen to parse them and fixes problem with parsing interfaces and protocols that share the same name.

Changelog:
[Internal]

Reviewed By: cipolleschi

Differential Revision: D96141632

fbshipit-source-id: 76c5873574108eb0f610637ce2bd2eeb54b8537c