[web] Add emoji Picker to EmojiAvatarSelectionModal
Summary:
Add emojimart Picker to EmojiAvatarSelectionModal and hook up to pendingAvatarEmoji.
NOTE: Styling here isn't final. There weren't detailed designs for this screen so I'm going to improvise a bit. That said, going to focus on functionality first so disregard how it looks for now.
Depends on D8267
Test Plan:
Works as expected:
Reviewers: ashoat, ginsu, rohan, kamil, inka, michal
Reviewed By: ginsu
Subscribers: tomek
Differential Revision: https://phab.comm.dev/D8268