Update classification of RCs (#48565)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48565

The changelog for 0.77 needs some love as there are some entry that are incorrectly classified.

In this diff I took care of fixing the entries in the RCs.

We need to go through all the other classes of entries.

## Changelog:
[Internal] - Refine 0.77 changelog

Reviewed By: cortinico

Differential Revision: D67940292

fbshipit-source-id: 3373d2f2879c7137ad93b4b53672a0f8e322776f