protable 的复选框可不可以变化位置？？

### 🥰 需求描述 | Requirements description
使用Table.SELECTION_COLUMN 无效果 期望有什么解决方案

### 🧐 解决方案 | Solution

### 🚑 其他信息 | Other information

Start by investigating ProTable's handling of Table.SELECTION_COLUMN and reproduce the reported lack of effect. Determine whether the checkbox column's position is intended to be configurable, then define the expected behavior and verify that the requested positioning works.

Written by the indexing model from the issue text.