handle deleting instances

Author: AhmedAbdoElhawary

lib/features/sorting/merge/view/merge_sort_page.dart

@@ -9,19 +9,14 @@ final _notifierProvider = StateNotifierProvider<SortingNotifier, SortingNotifier
   (ref) => MergeSortNotifier(),
 );
 
-class MergeSortPage extends ConsumerStatefulWidget {
+class MergeSortPage extends StatefulWidget {
   const MergeSortPage({super.key});
 
   @override
-  ConsumerState<MergeSortPage> createState() => _MergeSortPageState();
+  State<MergeSortPage> createState() => _MergeSortPageState();
 }
 
-class _MergeSortPageState extends ConsumerState<MergeSortPage> {
-  @override
-  void deactivate() {
-    ref.invalidate(_notifierProvider); // deletes current instance and resets
-    super.deactivate();
-  }
+class _MergeSortPageState extends State<MergeSortPage> {
 
   @override
   Widget build(BuildContext context) {

lib/features/sorting/quick/view/quick_sort_page.dart

@@ -9,20 +9,14 @@ final _notifierProvider = StateNotifierProvider<SortingNotifier, SortingNotifier
   (ref) => QuickSortNotifier(),
 );
 
-class QuickSortPage extends ConsumerStatefulWidget {
+class QuickSortPage extends StatefulWidget {
   const QuickSortPage({super.key});
 
   @override
-  ConsumerState<QuickSortPage> createState() => _QuickSortPageState();
+  State<QuickSortPage> createState() => _QuickSortPageState();
 }
 
-class _QuickSortPageState extends ConsumerState<QuickSortPage> {
-  @override
-  void deactivate() {
-    ref.invalidate(_notifierProvider); // deletes current instance and resets
-    super.deactivate();
-  }
-
+class _QuickSortPageState extends State<QuickSortPage> {
   @override
   Widget build(BuildContext context) {
     return SortingPage(instance: _notifierProvider, title: StringsManager.quickSort);