[lib] Fix containingThreadID typo in usePotentialMemberItems
Summary:
Super minor, but noticed while working with usePotentialMemberItems so figured I'd fix.
Depends on D12158
Test Plan: NA, just made sure new name doesn't collide with any existing names.
Reviewers: ashoat, ginsu, tomek, varun
Reviewed By: ashoat
Differential Revision: https://phab.comm.dev/D12254