使用ATableColumn进行伸缩列的扩展的编码，但是鼠标拖拽border的时候的时候表头列宽并没有发生变化，而使用columns的方式却是正常的

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Version

4.2.3

Environment

archlinux and windows 11, chrome 126.0.6478.61，Vue 3.2.0

Reproduction link

地址

Steps to reproduce

复制官网demo,将其中的表的列改为ATableColumn，并设置resizable属性，在ATable上设置resizeColumn事件监听，随后拖拽表头的列

What is expected?

期望鼠标在表头border上拖拽的时候，列宽度跟随变化

What is actually happening?

表头列宽度并没有发生变化

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每次拖拽表头边框的时候,事件都响应到了 但是列宽就是没改变

[webvs2]

The problem will be viewed

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The problem will be viewed

@webvs2 我这边提了一个pr, 可以解决当前存在的问题，而不会对原有功能有影响 #7680

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