Copied the code in EmojiAvatarCreation and pasted it into both EmojiUserAvatarCreation and EmojiThreadAvatarCreation. Also updated the navigators and imports to use these two new components.
There is a bunch of shared code in EmojiUserAvatarCreation and EmojiThreadAvatarCreation, but the next diff will handle factoring out all the shared code back into EmojiAvatarCreation