Table没有border时，columns存在只有一列的子列下的样式问题

[AIWWJ]

Reproduction link

Steps to reproduce

columns 中某一列的children只有一列时

What is expected?

borderd没有设置为true，若某列只有一列子列时，父级和子级中间不要有横线，再者希望父级右侧的竖线在中间位置

What is actually happening?

父级和子级中间有横线，且父级右侧的竖线在上方

Environment	Info
antd	5.16.1
React	17
System	mac
Browser	chrome

[AIWWJ]

[github-actions]

Hello @AIWWJ. We totally like your proposal/feedback, welcome to send us a Pull Request for it. Please send your Pull Request to proper branch (feature branch for the new feature, master for bugfix and other changes), fill the Pull Request Template here, provide changelog/TypeScript/documentation/test cases if needed and make sure CI passed, we will review it soon. We appreciate your effort in advance and looking forward to your contribution!

你好 @AIWWJ，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。请将 Pull Request 发到正确的分支（新特性发到 feature 分支，其他发到 master 分支），务必填写 Pull Request 内的预设模板，提供改动所需相应的 changelog、TypeScript 定义、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。