Update sound settings icons

In several places we were referencing private icons from
frameworks/base/core instead of versions we already had in
settings. Also add in a "media stream off" icon to match the one we
already had for "media stream on".

Bug: 77982107
Test: manual (Settings->Sound, then use hardware controls to modify
media and ring volumes)

Change-Id: I3a1d808b3028bb4f2feae4536194dc58c3177a66

src/com/android/settings/notification/MediaVolumePreferenceController.java

@@ -55,6 +55,6 @@ public class MediaVolumePreferenceController extends
 
     @Override
     public int getMuteIcon() {
-        return com.android.internal.R.drawable.ic_audio_media_mute;
+        return R.drawable.ic_media_stream_off;
     }
 }