We added communityThreadInfo: ?(RawThreadInfo | ThreadInfo) field to threadFrozenDueToViewerBlock and updated ChatInputBar on both clients to pass in communityThreadInfo. For now we're not doing anything with communityThreadInfo in threadFrozenDueToViewerBlock, this is in preparation for that. We need to do something similar for threadFrozenDueToBlock and then threadIsWithBlockedUserOnly and then threadOrParentThreadHasAdminRole, etc.
Depends on D11286