Remove LegacyResolvedThreadInfo from the codebase entirely
Summary:
Part of https://linear.app/comm/issue/ENG-6366/rename-minimallyencodedrawthreadinfo-to-rawthreadinfo
Remove last instances of LegacyResolvedThreadInfo from the codebase in all workspaces.
Depends on D10672
Test Plan: flow
Reviewers: ashoat, ginsu, tomek
Reviewed By: ashoat
Differential Revision: https://phab.comm.dev/D10673