Add additional operations to the left and right of the tabs

[woshidashengtadie]

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

Version

2.2.8

Environment

window Google Chrome 98.0.4758.102（正式版本） "vue": "^3.2.25"

Reproduction link

Steps to reproduce

Left Extra Action

Right Extra Action Content of tab 1 Content of tab 2 Content of tab 3

What is expected?

tabs页签左右边添加附加操作

What is actually happening?

tabs页签左右边添加附加操作代码之后，没有显示出效果

[tangjinzhou]

update 3.1

[github-actions]

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