Move AppInfoDashboardFragment into appinfo package.

- update all references to AppInfoDashboardFragment
- removed PackageUtil inner class and change the corresponding function
to be a simple method.

Bug: 69384089
Test: make RunSettingsRoboTests
Change-Id: Ief067e25a303ef16db20b2ca1d8840cb06eff5f9

src/com/android/settings/applications/RecentAppsPreferenceController.java

@@ -40,6 +40,7 @@ import android.util.Log;
 
 import com.android.settings.R;
 import com.android.settings.Utils;
+import com.android.settings.applications.appinfo.AppInfoDashboardFragment;
 import com.android.settings.core.FeatureFlags;
 import com.android.settings.core.PreferenceControllerMixin;
 import com.android.settings.widget.AppPreference;