Add highlight menu keys for all toggle pref controllers and custom slices

Bug: 204695404
Test: manual, robotest build pass, unit
Change-Id: Iad2e28ada8ddb766ffa7eff2c8dc581250cbd6f8

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

@@ -32,6 +32,7 @@ import android.provider.Settings;
 import androidx.preference.PreferenceScreen;
 
 import com.android.internal.widget.LockPatternUtils;
+import com.android.settings.R;
 import com.android.settings.core.TogglePreferenceController;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.RestrictedLockUtils;
@@ -146,6 +147,11 @@ public class RedactNotificationPreferenceController extends TogglePreferenceCont
         return AVAILABLE;
     }
 
+    @Override
+    public int getSliceHighlightMenuRes() {
+        return R.string.menu_key_notifications;
+    }
+
     @Override
     public void onStart() {
         mContext.getContentResolver().registerContentObserver(