Dropdown drop-down menu component, sub-menu automatically breaks

[xy-wind]

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

What problem does this feature solve?

https://codesandbox.io/s/4csy7t

Dropdown下拉菜单组件有多级菜单时，在显示子级菜单会自动断行。即使是只有2个中文字符也会断行。
在最新的版本3.2.10，官方的多级菜单示例也有这个现象。
https://www.antdv.com/components/dropdown-cn#components-dropdown-demo-sub-menu

显示子级菜单时，是否可以不自动断行。

What does the proposed API look like?

ant-design-vue: 3.2.5
vue:3.2.33
chrome:103.0.5060.114
os:windows 10

[xy-wind]

测试了一下其它浏览器，在最新的Microsoft Edge 103.0.1264.49 中，子菜单也会自动断行。

[github-actions]

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