Use hasSentValidBubble in settings

This change makes it such that bubble settings will only be available once
the app has sent a bubble notification.

Test: atest BubbleSummaryPreferenceControllerTest
Bug: 178387292
Change-Id: I459ffcedc4194d953e8b7170937e2eb5334d1422

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

@@ -361,6 +361,15 @@ public class NotificationBackend {
         }
     }
 
+    public boolean hasSentValidBubble(String pkg, int uid) {
+        try {
+            return sINM.hasSentValidBubble(pkg, uid);
+        } catch (Exception e) {
+            Log.w(TAG, "Error calling NoMan", e);
+            return false;
+        }
+    }
+
     /**
      * Returns all notification channels associated with the package and uid that will bypass DND
      */