Summary:
In order to adopt react 19's ref-as-prop model, we need to eliminate all the places where they are treated differently. `React.AbstractComponent` is the worst example of this, and we need to eliminate it.
This diff replaces 2 more remaining ones in react-native. Now the only remaining one is the one synced from react repo.
Changelog: [Internal]
Reviewed By: alexmckenley
Differential Revision: D64722899
fbshipit-source-id: 2b2484c385fc5d6c173253f9bee66dfc736368a5