new: rebuild impl

lib/view/widget/rebuild.dart

@@ -1,32 +0,0 @@
-import 'package:flutter/material.dart';
-
-class RebuildWidget extends StatefulWidget {
-  const RebuildWidget({super.key, required this.child});
-
-  final Widget child;
-
-  static void restartApp(BuildContext context) {
-    context.findAncestorStateOfType<_RebuildWidgetState>()?.restartApp();
-  }
-
-  @override
-  _RebuildWidgetState createState() => _RebuildWidgetState();
-}
-
-class _RebuildWidgetState extends State<RebuildWidget> {
-  Key key = UniqueKey();
-
-  void restartApp() {
-    setState(() {
-      key = UniqueKey();
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return KeyedSubtree(
-      key: key,
-      child: widget.child,
-    );
-  }
-}