fix: Restore event auth check 4 in v12 rooms

Reviewed-By: Jacob Taylor <jacob@explodie.org>

src/core/matrix/state_res/event_auth.rs

@@ -337,8 +337,7 @@ where
 	// If the create event content has the field m.federate set to false and the
 	// sender domain of the event does not match the sender domain of the create
 	// event, reject.
-	if !(room_version.room_id_format == RoomIdFormatVersion::V2)
-		&& !room_create_content.federate
+	if !room_create_content.federate
 		&& room_create_event.sender().server_name() != incoming_event.sender().server_name()
 	{
 		warn!(