[native] Show ActivityIndicator in EditUserAvatar during update
Summary:
We consume isGalleryAvatarUpdateLoading and isRemoveAvatarUpdateLoading introduced in previous diffs to display ActivityIndicator (ie spinner) when an update is in progress.
Note: Yeah there are obvious things that can be factored out. I want to get more of the error handling stuff done first and then I'll go through and consolidate things.
Depends on D7528
Test Plan:
Works as expected:
Reviewers: ashoat, ginsu
Reviewed By: ashoat
Subscribers: tomek
Differential Revision: https://phab.comm.dev/D7529