avoid unnecessary scrolling

app/lib/features/geckoview/features/browser/presentation/widgets/sheets/view_tabs.dart

@@ -352,7 +352,9 @@ class ViewTabsSheetWidget extends HookConsumerWidget {
                     [MediaQuery.of(context).size.width, crossAxisCount],
                   );
 
+                  final lastScroll = useRef<String?>(null);
                   useEffect(() {
+                    if (lastScroll.value != activeTab) {
                       final index = filteredTabEntities.value.indexWhere(
                         (entity) => entity.tabId == activeTab,
                       );
@@ -361,6 +363,8 @@ class ViewTabsSheetWidget extends HookConsumerWidget {
                         final offset = (index ~/ 2) * itemHeight;
 
                         if (offset != sheetScrollController.offset) {
+                          lastScroll.value = activeTab;
+
                           unawaited(
                             sheetScrollController.animateTo(
                               offset,
@@ -370,6 +374,7 @@ class ViewTabsSheetWidget extends HookConsumerWidget {
                           );
                         }
                       }
+                    }
 
                     return null;
                   }, [filteredTabEntities, activeTab]);
@@ -540,7 +545,7 @@ class ViewTabTreesSheetWidget extends HookConsumerWidget {
             Expanded(
               child: HookConsumer(
                 builder: (context, ref, child) {
-                  final filteredTabIds = ref.watch(
+                  final filteredTabEntities = ref.watch(
                     seamlessFilteredTabEntitiesProvider(
                       searchPartition: TabSearchPartition.preview,
                       // ignore: document_ignores using fast equatable
@@ -561,13 +566,16 @@ class ViewTabTreesSheetWidget extends HookConsumerWidget {
                       );
 
                       return math.max(
-                        math.min(calculatedCount, filteredTabIds.value.length),
+                        math.min(
+                          calculatedCount,
+                          filteredTabEntities.value.length,
+                        ),
                         2,
                       );
                     },
                     [
                       MediaQuery.of(context).size.width,
-                      filteredTabIds.value.length,
+                      filteredTabEntities.value.length,
                     ],
                   );
 
@@ -586,7 +594,7 @@ class ViewTabTreesSheetWidget extends HookConsumerWidget {
                   );
 
                   useEffect(() {
-                    final index = filteredTabIds.value.indexWhere(
+                    final index = filteredTabEntities.value.indexWhere(
                       (entity) => entity.tabId == activeTab,
                     );
 
@@ -605,20 +613,21 @@ class ViewTabTreesSheetWidget extends HookConsumerWidget {
                     }
 
                     return null;
-                  }, [filteredTabIds, activeTab]);
+                  }, [filteredTabEntities, activeTab]);
 
                   final tabs = useMemoized(() {
-                    return filteredTabIds.value.whereType<TabTreeEntity>().map((
+                    return filteredTabEntities.value
-                      entity,
+                        .whereType<TabTreeEntity>()
-                    ) {
+                        .map((entity) {
                           return TabTreePreview(
                             entity: entity,
                             activeTabId: activeTab,
                             onClose: onClose,
                             stackPadding: const Offset(8, 8),
                           );
-                    }).toList();
+                        })
-                  }, [filteredTabIds, activeTab]);
+                        .toList();
+                  }, [filteredTabEntities, activeTab]);
 
                   return Padding(
                     padding: const EdgeInsets.symmetric(horizontal: 4.0),