PLEASE NOTE THAT THIS DIFF AND SUBSEQUENT DIFFS IN THIS STACK WILL NOT BE LANDED UNTIL MORE OF THE REDESIGN IS READY SINCE THIS WILL CAUSE REGRESSIONS IN PROD
There is a a lot business logic for searching + selecting the users for the add members logic. To keep things better organized + have the add members modal follow a similar pattern to the add friends modal, I created a new hook called useAddMembersListUserInfos to house all the business logic for searching + selecting the users
Depends on D10941