feat: 알림 재예약 개선과 패키지 업그레이드

lib/widgets/empty_state_widget.dart

@@ -17,12 +17,12 @@ class EmptyStateWidget extends StatelessWidget {
   final VoidCallback onAddPressed;
 
   const EmptyStateWidget({
-    Key? key,
+    super.key,
     required this.fadeController,
     required this.rotateController,
     required this.slideController,
     required this.onAddPressed,
-  }) : super(key: key);
+  });
 
   @override
   Widget build(BuildContext context) {