Add onPreferenceClickListener to dnd schedule

- Talkback says the preference is clickable

Test: manual
Bug: 124827588
Change-Id: I1cf5ae564eb0a7ddfa60e1c307f00194f9338a13

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

@@ -63,6 +63,11 @@ public class ZenAutomaticRuleSwitchPreferenceController extends
             mSwitchBar.setSwitchBarText(R.string.zen_mode_use_automatic_rule,
                     R.string.zen_mode_use_automatic_rule);
             try {
+                pref.setOnPreferenceClickListener(preference -> {
+                    mRule.setEnabled(!mRule.isEnabled());
+                    mBackend.updateZenRule(mId, mRule);
+                    return true;
+                });
                 mSwitchBar.addOnSwitchChangeListener(this);
             } catch (IllegalStateException e) {
                 // an exception is thrown if you try to add the listener twice
@@ -71,7 +76,6 @@ public class ZenAutomaticRuleSwitchPreferenceController extends
         }
     }
 
-
     public void onResume(AutomaticZenRule rule, String id) {
         mRule = rule;
         mId = id;