在表格组件中，【expandedRowRender，expandIcon，expandRowByClick】三个属性一起使用的问题

[caohuiboss]

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

Version

1.6.5

Environment

win10/mac，最新谷歌浏览器，Vue(2.6.11)

Reproduction link

Steps to reproduce

可以观看重现链接，你会发现虽然expandIcon属性已经将左侧加号隐藏了，但是原先展开的加号所占的位置是还在的

What is expected?

我期望的结果肯定是能点击行展开，且隐藏加号包括它所占的位置，比如姓名是第一列，并非是我已经设置成隐藏的加号为第一列

What is actually happening?

实际结果：虽然expandIcon属性已经将左侧加号隐藏了，但是原先展开的加号所占的位置是还在的

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[github-actions]

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