restore old light button behavior

watch faces that handle EVENT_LIGHT_BUTTON_UP but not EVENT_LIGHT_BUTTON_DOWN
probably don't want the default EVENT_LIGHT_BUTTON_DOWN LED activation behavior

movement/watch_faces/complication/interval_face.c

@@ -667,6 +667,9 @@ bool interval_face_loop(movement_event_t event, movement_settings_t *settings, v
     case EVENT_TIMEOUT:
         if (state->face_state != interval_state_running) movement_move_to_face(0);
         break;
+    case EVENT_LIGHT_BUTTON_DOWN:
+        // don't light up every time light is hit
+        break;
     default:
         movement_default_loop_handler(event, settings);
         break;