chan_sip: Trigger reinvite if the SDP answer is included in the SIP ACK

Some equipments may send a re-INVITE containing an SDP in the final ACK
request. If this happens in the context of direct media, the remote end
should be updated with a re-INVITE.
This patch queues an "update RTP peer" frame to trigger the re-INVITE,
instead of the "source change" frame wich was used previously.

ASTERISK-26951

Change-Id: I3644d2025f20e086ea9f8f62b486172c52b5b2e6

channels/chan_sip.c

@@ -28900,7 +28900,7 @@ static int handle_incoming(struct sip_pvt *p, struct sip_request *req, struct as
 					return -1;
 				}
 				if (ast_test_flag(&p->flags[0], SIP_DIRECT_MEDIA)) {
-					ast_queue_control(p->owner, AST_CONTROL_SRCCHANGE);
+					ast_queue_control(p->owner, AST_CONTROL_UPDATE_RTP_PEER);
 				}
 			}
 			sched_check_pendings(p);