[native] have UserAvatar component also use currentUserInfo state

Summary:
In the past the UserAvatar component only fetched the userInfo from the redux user state store; however, we should also fetch from the currentUserInfo state if the userID prop equals the current user info id. This is because when we save an avatar, we only update the user avatar locally in redux in the currentUserInfo state not in the redux user state store.

This was causing an issue where when we saved the avatar and then navigated back it would take a while for the current user avatar to update since it was only looking at redux user state store which will update when it eventually detects this inconsistency.

Test Plan:
Please see the demo videos to see the changes I made:

Before (eventually the avatar will switch but it takes a few min):

After:

Reviewers: ashoat, atul

Reviewed By: ashoat

Subscribers: ashoat, tomek, atul

Differential Revision: https://phab.comm.dev/D7360