[native] Consume useThreadListSearch in ChatThreadList

Summary:
Huge shoutout @jacek for giving us the gift of useThreadListSearch which we're able to just seamlessly drop into ChatThreadList. This further helps reduce the number of ChatThreadList re-renders.

We're getting closer, but there's still some more work to get to no re-renders of ChatThreadList when we navigate to MessageList from ThreadList...

Depends on D9211

Test Plan: Search experience continues to look and work as expected. Set logs in all expected callbacks to ensure that they fired as expected. Made sure that x-icon and "Cancel" button continue to look and behave as before.

Reviewers: ginsu, tomek, rohan

Reviewed By: rohan

Subscribers: ashoat, jacek

Differential Revision: https://phab.comm.dev/D9212