Merge pull request #5576 from matrix-org/babolivier/3pid-invite-ratelimit

Don't update the ratelimiter before sending a 3PID invite

changelog.d/5576.bugfix

+Fix a bug that would cause invited users to receive several emails for a single 3PID invite in case the inviter is rate limited.

synapse/handlers/room_member.py

@@ -823,6 +823,7 @@ class RoomMemberHandler(object):
                 "sender": user.to_string(),
                 "state_key": token,
             },
+            ratelimit=False,
             txn_id=txn_id,
         )