fix(Select): synchronously derive filtered options

[RSS1102]

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交
• 文档改进
• 组件样式/交互改进
• 重构

🔗 相关 Issue

https://tdesign.tencent.com/react/components/select#可过滤的选择器

#4382

perf #4388

💡 需求背景和解决方案

Select 的 filterable 面板在选中选项时会立即清空筛选词，但浮层仍处于关闭动画中。原实现通过 effect 更新候选列表，因此可能先提交完整列表，再提交筛选结果，造成“完整列表 → 筛选列表”的短暂闪动。

本次修复将候选项标准化和本地过滤结果改为同步派生，保证同一次渲染使用最新的筛选列表；同时保留关闭动画期间的最后一份可见列表，避免清空关键词时提前显示全部选项。已选项映射仍基于完整候选数据，避免筛选或远程搜索后丢失已选标签。

📝 更新日志

tdesign-react

• fix(Select): 修复 filterable 选择选项后关闭面板时短暂显示完整列表的问题
• fix(Select): 修复 filterable 下中文输入法筛选选中后再次输入会残留上次筛选内容的问题

☑️ 请求合并前的自查清单

• 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
• Changelog 已提供或无须提供

[github-actions]

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Total Size: 115 kB

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_{compressed-size-action::tdesign-react-chat}

[tdesign-bot]

TDesign Component Site Preview Open

Component	Preview
tdesign-react
@tdesign-react/chat

[pkg-pr-new]

• tdesign-react-demo

  npm i https://pkg.pr.new/Tencent/tdesign-react@4389
  

  npm i https://pkg.pr.new/Tencent/tdesign-react/@tdesign-react/chat@4389
  

commit: 99d6dc8

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Size Change: -153 B (-0.02%)

Total Size: 932 kB

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packages/tdesign-react/dist/tdesign.js	514 kB	-53 B (-0.01%)
packages/tdesign-react/dist/tdesign.min.js	300 kB	-100 B (-0.03%)

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packages/tdesign-react/dist/tdesign.css	61 kB
packages/tdesign-react/dist/tdesign.min.css	55.2 kB

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