table 中切换当前页显示条数，仍保持原有选中项选中

[zhangtong-123]

The issue which is not created via https://vuecomponent.github.io/issue-helper/ will be closed immediately.

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注意：不是用 https://vuecomponent.github.io/issue-helper/ 或 http://ant-design-vue.gitee.io/issue-helper/ 创建的 issue 会被立即关闭。

[close-issue-app]

Your issue has been closed because it does not conform to our issue requirements. Please use the Issue Helper to create an issue, thank you!

为了能够进行高效沟通，我们对 issue 有一定的格式要求，你的 issue 因为不符合要求而被自动关闭。你可以通过 issue 助手 来创建 issue 以方便我们定位错误。谢谢配合！

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.