nz-popconfirm is no longer showing arrows on the popconfirm dialog window

[EvanSevy]

Reproduction link

https://codesandbox.io/s/zc509

Steps to reproduce

Any default nz-popconfirm will not show the 'arrow' even though it is marked as the default action.

The component has a [nzPopconfirmShowArrow] parameter, which I have tried to mark 'true' in order to get the 'arrow' functionality, but it doesn't work. It says it's default is 'true' anyhow.

All the examples in the https://ng.ant.design/components/popconfirm/en example page are now also missing the 'arrow' as well.

What is expected?

An arrow on the edge of the popconfirm dialog box, pointing to its parent object.

When using nz-popconfirm it used to have the little 'arrow' on the edge of the popconfirm dialog box, pointing to the popconfirm parent object. Now it no longer has this arrow, at least in ngzorro version 12.0.1, if not prior.

What is actually happening?

Just the box with no arrow is displayed.

Environment	Info
ng-zorro-antd	12.0.1
Browser	Edge

[zorro-bot]

Hello @EvanSevy. We totally like your proposal/feedback, welcome to send us a Pull Request for it. Please fill the Pull Request Template here, provide documentation/test cases if needed and make sure CI passed, we will review it soon. Appreciate it advance and we are looking forward to your contribution!

你好 @EvanSevy, 我们完全同意你的提议/反馈，欢迎直接在此仓库 创建一个 Pull Request 来解决这个问题。请务必填写 Pull Request 内的预设模板，提供改动所需相应的测试用例、文档等，并确保 CI 通过，我们会尽快进行 Review，提前感谢和期待您的贡献！