如何在构造时使用状态类中的有状态小部件参数，而不将小部件添加到树中？

import 'package:flutter/material.dart';

class MyWidget extends StatefulWidget {
  final MyState state;

  MyWidget({required this.state});

  @override
  _MyWidgetState createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {
  late MyState _state;

  @override
  void initState() {
    super.initState();
    _state = widget.state;
  }

  @override
  Widget build(BuildContext context) {
    // 使用_state中的参数进行构建小部件
    return Container(
      child: Text(_state.parameter),
    );
  }
}

class MyState {
  final String parameter;

  MyState({required this.parameter});
}

void main() {
  MyState state = MyState(parameter: 'Hello World');
  MyWidget widget = MyWidget(state: state);

  runApp(MaterialApp(
    home: Scaffold(
      body: widget,
    ),
  ));
}