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/zen/ZenModeSliceBuilder.java

@@ -120,7 +120,7 @@ public class ZenModeSliceBuilder {
         final String screenTitle = context.getText(R.string.zen_mode_settings_title).toString();
         return SliceBuilderUtils.buildSearchResultPageIntent(context,
                 ZenModeSettings.class.getName(), ZEN_MODE_SLICE_KEY, screenTitle,
-                SettingsEnums.NOTIFICATION_ZEN_MODE)
+                SettingsEnums.NOTIFICATION_ZEN_MODE, R.string.menu_key_notifications)
                 .setClassName(context.getPackageName(), SubSettings.class.getName())
                 .setData(contentUri);
     }