Hide audio switcher entry-point in the volume slice when in call

- update test case

Bug: 132385707
Test: make -j42 RunSettingsRoboTests
Change-Id: Ibfd12e75f584b6884d1025018772ac9c19673156

src/com/android/settings/media/MediaOutputIndicatorWorker.java

@@ -78,4 +78,9 @@ public class MediaOutputIndicatorWorker extends SliceBackgroundWorker implements
             notifySliceChange();
         }
     }
+
+    @Override
+    public void onAudioModeChanged() {
+        notifySliceChange();
+    }
 }