Updating clientThreadFrozenDueToBlock and getMinimallyEncodedCurrentUser signatures to include communityThreadInfo.
Next step is to update useExistingThreadInfoFinder (which is easy) and threadInfoFromRawThreadInfo (which is hard and requires recursively updating all the callsites).
Will begin with useExistingThreadInfoFinder, and then update threadInfoFromRawThreadInfo and callsites, etc and proceed.
Depends on D11311