2.x版本中 Notification组件中使用h函数自定义按钮失败

[rockfang]

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

Version

2.0.0-rc.4

Environment

Chrome， ant-design-vue 2.x版本

Reproduction link

https://2x.antdv.com/components/notification-cn/#components-notification-demo-custom-close-button

Steps to reproduce

查看官网示例中notification中自定义图标
https://2x.antdv.com/components/notification-cn/#components-notification-demo-custom-close-button

核心代码：
notification.open({
message: 'Notification Title',
description:
'A function will be be called after the notification is closed (automatically after the "duration" time of manually).',
btn: () => {
return h(
'a-button',
{
type: 'primary',
size: 'small',
onClick: () => notification.close(key),
},
'Confirm',
);
},
key,
onClose: close,
});

What is expected?

希望使用h函数自定义生效

What is actually happening?

h函数自定义失败

[John60676]

Duplicate of #3324

[github-actions]

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