This enables users to see themselves in the @-mention tooltip so they can mention themselves. We won't have to make any changes to the user-profile on `web`/`native` since we already only just show the 'Message' button if `otherUserInfo` is undefined
This is part of [[ https://linear.app/comm/issue/ENG-6297/consider-allowing-users-to-mention-themselves | ENG-6297 ]]