♻️ New auto impl leading

lib/screens/notification.dart

@@ -10,6 +10,7 @@ import 'package:styled_widget/styled_widget.dart';
 import 'package:surface/providers/sn_network.dart';
 import 'package:surface/types/notification.dart';
 import 'package:surface/types/post.dart';
+import 'package:surface/widgets/app_bar_leading.dart';
 import 'package:surface/widgets/dialog.dart';
 import 'package:surface/widgets/loading_indicator.dart';
 import 'package:surface/widgets/markdown_content.dart';
@@ -132,6 +133,7 @@ class _NotificationScreenState extends State<NotificationScreen> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
+        leading: AutoAppBarLeading(),
         title: Text('screenNotification').tr(),
         actions: [
           IconButton(