🐛[BUG] ProFormSelect 组件上添加showSearch之后，每次输入都会触发request

提问前先看看：

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

### 🐛 bug 描述

ProFormSelect 组件上添加showSearch之后，每次输入都会触发request请求，当ProFormSelect为多选模式时，不加showSearch不会触发重复请求,
ProTable中的columns valueType=‘select’也会有同样的表现

### 🏞 期望结果

showSearch 不要重复请求

### © 版本信息

- ProComponents 版本: 2.8.5
- umi 版本 ^4.1.1
- 浏览器环境 132.0.6834.83
- 开发环境 windows

### 🚑 其他信息

Start by reproducing the request behavior in ProFormSelect with showSearch, comparing single- and multi-select modes and the ProTable columns path with valueType='select'. Trace the component entry points responsible for issuing requests, then verify that typing with showSearch no longer causes duplicate requests.

Written by the indexing model from the issue text.