Use ColumnGroup child tableColumn default sorting invalid

[12Park]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

3.3.0-beta.2

Environment

win10,win11,chrome99.0.4844.51,vue3

Reproduction link

Steps to reproduce

使用ColumnGroup在tableColumn表头上排序失效（只能升序或降序）

What is expected?

使用ColumnGroup嵌套tableColumn，期望获取正确的sorter排序order

What is actually happening?

实际只能获取到固定的升序或降序值，不会随着点击排序符号改变

[tangjinzhou]

请正确填写版本

[12Park]

请正确填写版本

项目版本是
"vue": "^3.2.13",
"ant-design-vue": "^2.2.8",
浏览器版本是
chrome99.0.4844.51

[12Park]

需要加key属性

[MohitDeshwal]

@12Park which key? for the columns for the rows? either not working for me.

[12Park]

@12Park which key? for the columns for the rows? either not working for me.

set column's key ,
eg:
const columns = [{
title: 'Block',
children: [
{
title: 'Building',
dataIndex: 'building',
key: 'building',
width: 100,
},
{
title: 'Door No.',
dataIndex: 'number',
key: 'number',
width: 100,
},
],
}]

[github-actions]

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