라이브 취소 푸시 발송 로직 추가

src/main/kotlin/kr/co/vividnext/sodalive/live/room/LiveRoomService.kt

@@ -475,6 +475,15 @@ class LiveRoomService(
         }
 
         reservationRepository.cancelReservation(roomId = room.id!!)
+
+        applicationEventPublisher.publishEvent(
+            FcmEvent(
+                type = FcmEventType.CANCEL_LIVE,
+                title = room.member!!.nickname,
+                message = "라이브 취소 : ${room.title}",
+                roomId = request.roomId
+            )
+        )
     }
 
     @Transactional