fix: hot reload didn't work property

lib/src/flutter_deck_router.dart

@@ -1,9 +1,20 @@
+import 'package:flutter/widgets.dart';
 import 'package:flutter_deck/src/configuration/configuration.dart';
 import 'package:flutter_deck/src/flutter_deck_slide.dart';
 import 'package:go_router/go_router.dart';
 
 const _queryParameterStep = 'step';
 
+class _FlutterDeckSlidePage extends StatelessWidget {
+  const _FlutterDeckSlidePage(this.slide);
+  final FlutterDeckRouterSlide slide;
+
+  @override
+  Widget build(BuildContext context) {
+    return slide.widget.build(context);
+  }
+}
+
 /// A slide route for the slide deck.
 class FlutterDeckRouterSlide {
   /// Creates a slide route for the slide deck.
@@ -63,7 +74,7 @@ class FlutterDeckRouter {
               key: state.pageKey,
               restorationId: state.pageKey.value,
               transitionsBuilder: slide.configuration.transition.build,
-              child: slide.widget.build(context),
+              child: _FlutterDeckSlidePage(slide),
             ),
           ),
       ],