TrJoinR<TR1, TR2, ...>
Similar to TrJoin, but transitions are chained to the right instead of to the left. Like: (A TR2 (A TR1 B))
TrJoin
https://github.com/profezzorn/ProffieOS/blob/6f8add544c627172ad2dd698c90e5e55078a420a/transitions/join.h#L32