some async refactorings

app/lib/features/search_browser/presentation/screens/browser.dart

@@ -305,7 +305,7 @@ class KagiScreen extends HookConsumerWidget {
                     lastBackButtonPress.value = null;
 
                     if (activeWebView?.key != null && webViews.length > 1) {
-                      await ref
+                      ref
                           .read(webViewRepositoryProvider.notifier)
                           .closeTab(activeWebView!.key!);
                       return true;

app/lib/features/search_browser/presentation/widgets/sheets/view_tabs_sheet.dart

@@ -29,10 +29,8 @@ class ViewTabsSheet extends HookConsumerWidget {
               label: const Text('New Tab'),
             ),
             TextButton.icon(
-              onPressed: () async {
-                await ref
-                    .read(webViewRepositoryProvider.notifier)
-                    .closeAllTabs();
+              onPressed: () {
+                ref.read(webViewRepositoryProvider.notifier).closeAllTabs();
               },
               icon: const Icon(Icons.delete),
               label: const Text('Close All'),

app/lib/features/settings/presentation/controllers/save_settings.dart

@@ -11,7 +11,7 @@ class SaveSettingsController extends _$SaveSettingsController {
   Future<void> save(UpdateSettingsFunc updateSettings) async {
     state = const AsyncLoading();
     state = await AsyncValue.guard(
-      () async => ref
+      () => ref
           .read(settingsRepositoryProvider.notifier)
           .updateSettings(updateSettings),
     );

app/lib/features/share_intent/domain/services/sharing_intent.dart

@@ -53,7 +53,7 @@ Raw<Stream<ReceivedParameter>> sharingIntentStream(SharingIntentStreamRef ref) {
       // ignore: discarded_futures
       .getInitialSharing()
       // ignore: discarded_futures
-      .then((event) async {
+      .then((event) {
     FlutterSharingIntent.instance.reset();
     return event;
   }).asStream();

app/lib/features/web_view/domain/repositories/web_view.dart

@@ -35,11 +35,11 @@ class WebViewRepository extends _$WebViewRepository {
     state = {...state, webView.page.value.key: webView};
   }
 
-  Future<void> closeTab(Key key) async {
+  void closeTab(Key key) {
     state = Map.of(state)..remove(key);
   }
 
-  Future<void> closeAllTabs() async {
+  void closeAllTabs() {
     state = {};
   }
 }

app/lib/features/web_view/presentation/widgets/web_view_tab.dart

@@ -60,8 +60,8 @@ class WebViewTab extends HookConsumerWidget {
                   IconButton(
                     visualDensity:
                         const VisualDensity(horizontal: -4.0, vertical: -4.0),
-                    onPressed: () async {
-                      await ref
+                    onPressed: () {
+                      ref
                           .read(webViewRepositoryProvider.notifier)
                           .closeTab(page.key);
                     },