There are several search experiences in the app that do not use `get/usePotentialMemberItems`. This means we need to update them individually, so I'm separating out diffs to do exactly this to make it easy for reviewers. Each diff will affect one file ideally.
This diff affects `MembersModal`.
This component is used when viewing channel members on `web`.
Addresses [[ https://linear.app/comm/issue/ENG-5434/update-remaining-search-experiences-to-use-the-new-hook | ENG-5434 ]]
Depends on D10231