🧐[问题]ProTable 自定义 filterDropdown, 如何自定义搜索参数

提问前先看看：

https://github.com/ryanhanwu/How-To-Ask-Questions-The-Smart-Way/blob/main/README-zh_CN.md

### 🧐 问题描述

比如: filterDropdown 为 RangePicker, value为数组格式, 搜索时如何将参数自定义为: { start_date: '', end_date: '' }格式

### 💻 示例代码

### 🚑 其他信息

Start by reading ProTable's filterDropdown handling and the RangePicker value flow. Trace how the selected range becomes search parameters, then define what behavior would be considered done for producing separate start_date and end_date values.

Written by the indexing model from the issue text.