Log when we ignore a second call in a room

src/CallHandler.tsx

@@ -802,7 +802,10 @@ export default class CallHandler extends EventEmitter {
 
  const mappedRoomId = CallHandler.sharedInstance().roomIdForCall(call);
  if (this.getCallForRoom(mappedRoomId)) {
- // ignore multiple incoming calls to the same room
+ console.log(
+ "Got incoming call for room " + mappedRoomId +
+ " but there's already a call for this room: ignoring",
+ );
  return;
  }