Change Details

To better prepare the `EmojiAvatarCreation` component to handle both user and thread avatars I want to factor out this User avatar specfic function into a hook in the avatar util file so that the component won't be as cluttered when we extend to thread avatars

To better prepare the `EmojiAvatarCreation` component to handle both user and thread avatars I want to factor out this User avatar specfic function into a hook in the avatar util file so that the component won't be as cluttered when we extend to thread avatars --- Depends on D7423

To better prepare the `EmojiAvatarCreation` component to handle both user and thread avatars I want to factor out this User avatar specfic function into a hook in the avatar util file so that the component won't be as cluttered when we extend to thread avatars --- Depends on D7423