[Table]虚拟滚动下减少列数，会出现表头和表体单元格不对齐

[youluna]

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

Version

Component

Table

Reproduction link

https://riddle.alibaba-inc.com/riddles/9fe98635

Steps to reproduce

更改dataSource和colmuns，使table从有横向滚动条到没有横向滚动条，由于body上的min-width一直存在且不消失，导致table表头和表体单元格没对齐。