fix: add a close button to the bottom sheet for sharing the story

lib/app/features/feed/stories/views/components/story_viewer/components/share/story_share_modal.dart

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: ice License 1.0
 
 import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
 import 'package:ion/app/extensions/extensions.dart';
 import 'package:ion/app/features/feed/stories/views/components/story_viewer/components/share/share_actions_buttons.dart';
 import 'package:ion/app/features/feed/views/components/share_modal_base/share_modal_base.dart';
@@ -14,6 +15,7 @@ class StoryShareModal extends StatelessWidget {
       title: context.i18n.feed_share_via,
       showBackButton: true,
       showNextIcon: false,
+      onClose: context.pop,
       emptyStateWidget: const ShareActionButtons(),
     );
   }