use overlay buidler instead of instance

app/lib/features/geckoview/domain/controllers/overlay.dart

@@ -25,13 +25,13 @@ part 'overlay.g.dart';
 @Riverpod()
 class OverlayController extends _$OverlayController {
   @override
-  Widget? build() {
+  WidgetBuilder? build() {
     return null;
   }
 
   // ignore: use_setters_to_change_properties api decision
-  void show(Widget dialog) {
-    state = dialog;
+  void show(WidgetBuilder builder) {
+    state = builder;
   }
 
   void dismiss() {

app/lib/features/geckoview/domain/controllers/overlay.g.dart

@@ -6,12 +6,12 @@ part of 'overlay.dart';
 // RiverpodGenerator
 // **************************************************************************
 
-String _$overlayControllerHash() => r'b6dc3ca17611c4efadc7e8248d493cd3c7061e01';
+String _$overlayControllerHash() => r'7b7885e07ae557c14199b6942b5d6392592ab747';
 
 /// See also [OverlayController].
 @ProviderFor(OverlayController)
 final overlayControllerProvider =
-    AutoDisposeNotifierProvider<OverlayController, Widget?>.internal(
+    AutoDisposeNotifierProvider<OverlayController, WidgetBuilder?>.internal(
       OverlayController.new,
       name: r'overlayControllerProvider',
       debugGetCreateSourceHash: const bool.fromEnvironment('dart.vm.product')
@@ -21,6 +21,6 @@ final overlayControllerProvider =
       allTransitiveDependencies: null,
     );
 
-typedef _$OverlayController = AutoDisposeNotifier<Widget?>;
+typedef _$OverlayController = AutoDisposeNotifier<WidgetBuilder?>;
 // ignore_for_file: type=lint
 // ignore_for_file: subtype_of_sealed_class, invalid_use_of_internal_member, invalid_use_of_visible_for_testing_member, deprecated_member_use_from_same_package