Consider circuit isolation when closing redundant intro points
When tor receives more than one request for connecting to an onion service within a short amount of time, and these requests are circuit-isolated (by sockauth, or something else), tor will launch multiple connections to an intro point (one for each isolated request). When the first introduction succeeds (intro acks), tor closes any circuits it considers redundant (
rend_client_close_other_intros). Tor should only close circuits if the socks request isolation bits match.