Enable some settings pages to use paralleled-loading method

- Here these pages include AppInfoDashboardFragment, ConnectedDeviceDashboardFragment,
  DevelopmentSettingsDashboardFragment, NetworkDashboardFragment, ConfigureNotificationSettings.
- The TimeSpentInAppPreferenceController use the LiveDataController.

Fixes: 135299529
Bug: 137558156
Test: compilation
Change-Id: I455a16536c9966184f1b2bd81d1f1217f3e09f9d

src/com/android/settings/network/NetworkDashboardFragment.java

@@ -86,6 +86,11 @@ public class NetworkDashboardFragment extends DashboardFragment implements
                 this /* fragment */, this /* mobilePlanHost */);
     }
 
+    @Override
+    protected boolean isParalleledControllers() {
+        return true;
+    }
+
     private static List<AbstractPreferenceController> buildPreferenceControllers(Context context,
             Lifecycle lifecycle, MetricsFeatureProvider metricsFeatureProvider, Fragment fragment,
             MobilePlanPreferenceHost mobilePlanHost) {