如何将圆形边框添加到flutter中的表格

Table(
  children: [
    TableRow(
      children: [
        // 表格内容
      ],
    ),
    // 其他行
  ],
)

Container(
  decoration: BoxDecoration(
    shape: BoxShape.circle,
    border: Border.all(
      color: Colors.black,
      width: 2.0,
    ),
  ),
  child: // 表格组件,
)

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Container(
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              border: Border.all(
                color: Colors.black,
                width: 2.0,
              ),
            ),
            child: Table(
              children: [
                TableRow(
                  children: [
                    TableCell(
                      child: Text('Cell 1'),
                    ),
                    TableCell(
                      child: Text('Cell 2'),
                    ),
                  ],
                ),
                TableRow(
                  children: [
                    TableCell(
                      child: Text('Cell 3'),
                    ),
                    TableCell(
                      child: Text('Cell 4'),
                    ),
                  ],
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}