Add a resource override for providing default widgets filter.

The implementation in this CL is no-op i.e. all widgets will be shown

Bug: 356127021
Flag: com.android.launcher3.enable_tiered_widgets_by_default_in_picker
Test: Verified with other child cls
Change-Id: I0a6f8973dc8ec58fd87d29b3f291b5e290ea988d

src/com/android/launcher3/model/BgDataModel.java

@@ -537,7 +537,13 @@ public class BgDataModel {
         default void bindWidgetsRestored(ArrayList<LauncherAppWidgetInfo> widgets) { }
         default void bindRestoreItemsChange(HashSet<ItemInfo> updates) { }
         default void bindWorkspaceComponentsRemoved(Predicate<ItemInfo> matcher) { }
-        default void bindAllWidgets(List<WidgetsListBaseEntry> widgets) { }
+
+        /**
+         * Binds the app widgets to the providers that share widgets with the UI.
+         */
+        default void bindAllWidgets(@NonNull List<WidgetsListBaseEntry> widgets,
+                @NonNull List<WidgetsListBaseEntry> defaultWidgets) {
+        }
         default void bindSmartspaceWidget() { }
 
         /** Called when workspace has been bound. */