fix: Tooltip custom color typescript type definition

[CornerSkyless]

🤔 这个变动的性质是？

• 新特性提交
• 日常 bug 修复
• 站点、文档改进
• 演示代码改进
• 组件样式改进
• TypeScript 定义更新
• 包体积优化
• 性能优化
• 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

在TypeScript版本中使用Tooltip 自定义color属性（如#099999），代码检查报错

Issue 链接

close #25015

💡 需求背景和解决方案

将 Tooltip 中 color 定义由

color?: PresetColorType;

变为

color?: LiteralUnion<PresetColorType, string>;

📝 更新日志怎么写？

语言	更新描述
🇺🇸 英文	fix Tooltip custom color typescript type definition
🇨🇳 中文	修复 Tooltip 自定义颜色 Typescript 定义错误

☑️ 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
• Changelog 已提供或无须提供

首次尝试提交 PR :)

[ant-design-bot]

[ant-design-bot]

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[codecov]

Codecov Report

Merging #25315 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #25315   +/-   ##
=======================================
  Coverage   99.51%   99.51%           
=======================================
  Files         368      368           
  Lines        7290     7290           
  Branches     2042     2042           
=======================================
  Hits         7255     7255           
  Misses         35       35           

Impacted Files	Coverage Δ
components/tooltip/index.tsx	100.00% <ø> (ø)

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