fix(picker): 修复连续多次打开 picker 时显示值错误

[eiinu]

🤔 这个变动的性质是？

• [ ] 新特性提交
• [x] 日常 bug 修复
• [ ] 站点、文档改进
• [ ] 演示代码改进
• [ ] 组件样式/交互改进
• [ ] TypeScript 定义更新
• [ ] 包体积优化
• [ ] 性能优化
• [ ] 功能增强
• [ ] 国际化改进
• [ ] 重构
• [ ] 代码风格优化
• [ ] 测试用例
• [ ] 分支合并
• [ ] 其他改动（是关于什么的改动？）

🔗 相关 Issue

💡 需求背景和解决方案

☑️ 请求合并前的自查清单

⚠️ 请自检并全部勾选全部选项。⚠️

• [ ] 文档已补充或无须补充
• [ ] 代码演示已提供或无须提供
• [ ] TypeScript 定义已补充或无须补充
• [ ] fork仓库代码是否为最新避免文件冲突
• [ ] Files changed 没有 package.json lock 等无关文件

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 85.85%. Comparing base (13ead53) to head (de992ed).

Additional details and impacted files

@@           Coverage Diff           @@
##             next    #2222   +/-   ##
=======================================
  Coverage   85.85%   85.85%           
=======================================
  Files         217      217           
  Lines       22841    22841           
  Branches     2480     2480           
=======================================
  Hits        19610    19610           
  Misses       3226     3226           
  Partials        5        5           

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