improve back navigation and ask tabs to close when originated from intent

app/lib/features/geckoview/domain/repositories/tab.dart

@@ -54,6 +54,10 @@ class TabRepository extends _$TabRepository {
     return _tabFromIntent.contains(tabId);
   }
 
+  void clearLaunchedFromIntent(String tabId) {
+    _tabFromIntent.remove(tabId);
+  }
+
   Future<String?> _resolveParentIdForContext({
     required String? parentId,
     required String? targetContextId,

app/lib/features/geckoview/domain/repositories/tab.g.dart

@@ -41,7 +41,7 @@ final class TabRepositoryProvider
   }
 }
 
-String _$tabRepositoryHash() => r'f0ff983df4115bfed7ff3dbc8994592bc46a1daa';
+String _$tabRepositoryHash() => r'b300b88bc7817b533be46d8d0d933786b10212fb';
 
 abstract class _$TabRepository extends $Notifier<void> {
   void build();