[native] Consume useNativeUpdateThreadImageAvatar in useSelectFromGalleryAndUpdateImageAvatar
Summary:
Consume platform-specific nativeUpdateThreadAvatar instead of "base" updateThreadAvatar in useSelectFromGalleryAndUpdateImageAvatar.
Depends on D8740
NOTE: This is the `thread avatar version" of D8340. Probably could've been merged with D8740, but matching what I did for user avatars.
Test Plan: Ensure that selectFromGalleryAndUpdateThreadAvatar continues to work as expected. Break endpoint and ensure that platform-specific alert appears.
Reviewers: ashoat, ginsu
Reviewed By: ashoat
Subscribers: tomek
Differential Revision: https://phab.comm.dev/D8741