Add chime to lane changed blocked alert (#21159)

* Update carcontroller.py

* Lane change blocked orange + audible alert

* Actually make it make sound

* Update carcontroller.py

* leave priority the same

selfdrive/controls/lib/events.py

@@ -459,8 +459,8 @@ EVENTS: Dict[int, Dict[str, Union[Alert, Callable[[Any, messaging.SubMaster, boo
     ET.WARNING: Alert(
       "Car Detected in Blindspot",
       "Monitor Other Vehicles",
-      AlertStatus.normal, AlertSize.mid,
+      AlertStatus.userPrompt, AlertSize.mid,
-      Priority.LOW, VisualAlert.steerRequired, AudibleAlert.none, .0, .1, .1),
+      Priority.LOW, VisualAlert.steerRequired, AudibleAlert.chimePrompt, .1, .1, .1),
   },
 
   EventName.laneChange: {