DO NOT MERGE: Downbranch don't need this adjustment [Output Switcher] Disable volume when device is selectable in

group dialog

Test: Verified on device
Bug: 198510108
Change-Id: Ia6754e8d97bc768766f96eb25e5ea5fcca0b2602

packages/SystemUI/src/com/android/systemui/media/dialog/MediaOutputGroupAdapter.java

@@ -107,6 +107,8 @@ public class MediaOutputGroupAdapter extends MediaOutputBaseAdapter {
             initSeekbar(device);
             final List<MediaDevice> selectedDevices = mController.getSelectedMediaDevice();
             if (isDeviceIncluded(mController.getSelectableMediaDevice(), device)) {
+                mSeekBar.setEnabled(false);
+                mSeekBar.setOnTouchListener((v, event) -> true);
                 mCheckBox.setButtonDrawable(R.drawable.ic_check_box);
                 mCheckBox.setChecked(false);
                 mCheckBox.setEnabled(true);