handle deleting instances

Author: AhmedAbdoElhawary

lib/features/sorting/bubble/view/bubble_sort_page.dart

@@ -9,14 +9,14 @@ final _notifierProvider = StateNotifierProvider<SortingNotifier, SortingNotifier
   (ref) => BubbleSortNotifier(),
 );
 
-class BubbleSortPage extends ConsumerStatefulWidget {
+class BubbleSortPage extends StatefulWidget {
   const BubbleSortPage({super.key});
 
   @override
-  ConsumerState<BubbleSortPage> createState() => _BubbleSortPageState();
+  State<BubbleSortPage> createState() => _BubbleSortPageState();
 }
 
-class _BubbleSortPageState extends ConsumerState<BubbleSortPage> {
+class _BubbleSortPageState extends State<BubbleSortPage> {
   @override
   Widget build(BuildContext context) {
     return SortingPage(instance: _notifierProvider, title: StringsManager.bubbleSort);

lib/features/sorting/bucket/view/bucket_sort_page.dart

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

lib/features/sorting/counting/view/counting_sort_page.dart

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