Clean up DND slice in search.

- Remove the controller in SoundSettings, just use the common one.
- Update a bunch of IDs so ZenModeSliceBuilder maps to the toggle
  button in zen_mode_settings.xml

This is needed so the slice intent (left target when shown in search)
is the same as what we index from search side. Previously the search
indexer is finding zen_mode from sound page but the slice itself is
reporting a deep link into zenModeSettings page.

Fixes: 130437726
Test: robotest

Change-Id: Ic41d2d93afa1f748e3282e23010199a0fa078645

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

@@ -33,11 +33,12 @@ import com.android.settingslib.widget.LayoutPreference;
 public class ZenModeButtonPreferenceController extends AbstractZenModePreferenceController
         implements PreferenceControllerMixin {
 
+    public static final String KEY = "zen_mode_toggle";
+
     private static final String TAG = "EnableZenModeButton";
-    protected static final String KEY = "zen_mode_settings_button_container";
+    private final FragmentManager mFragment;
     private Button mZenButtonOn;
     private Button mZenButtonOff;
-    private FragmentManager mFragment;
 
     public ZenModeButtonPreferenceController(Context context, Lifecycle lifecycle, FragmentManager
             fragment) {
@@ -60,13 +61,13 @@ public class ZenModeButtonPreferenceController extends AbstractZenModePreference
         super.updateState(preference);
 
         if (null == mZenButtonOn) {
-            mZenButtonOn = (Button) ((LayoutPreference) preference)
+            mZenButtonOn = ((LayoutPreference) preference)
                     .findViewById(R.id.zen_mode_settings_turn_on_button);
             updateZenButtonOnClickListener();
         }
 
         if (null == mZenButtonOff) {
-            mZenButtonOff = (Button) ((LayoutPreference) preference)
+            mZenButtonOff = ((LayoutPreference) preference)
                     .findViewById(R.id.zen_mode_settings_turn_off_button);
             mZenButtonOff.setOnClickListener(v -> {
                 mMetricsFeatureProvider.action(mContext,