feat(Button): unified provision of custom prefixCls

[EmilyyyLiu]

统一添加自定义class 前缀
关联issue #6960

[github-actions]

[gemini-code-assist]

Summary of Changes

Hello @EmilyyyLiu, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

此拉取请求旨在为组件提供统一的 CSS 类名前缀管理机制。通过在 ConfigProvider 中引入 prefixCls 属性和 getPrefixCls 方法，开发者可以更灵活地控制组件的样式命名空间，避免潜在的样式冲突，并提高组件库的可定制性。Button 组件已率先适配此新机制，并增加了相应的测试和文档。

Highlights

• 统一前缀配置: 引入 ConfigProvider 来统一管理组件的 CSS 类名前缀，允许全局设置或组件级别覆盖，增强了组件库的可定制性。
• Button 组件适配: Button 组件现在支持通过 prefixCls 属性自定义其类名前缀，并能从 ConfigProvider 获取默认值，实现了与新配置机制的集成。
• 测试用例增强: 增加了新的测试用例和快照，以验证自定义类名前缀功能的正确性，包括 ConfigProvider 和组件自身 prefixCls 的优先级处理。
• 文档更新: 更新了英文和中文文档，明确说明了 ConfigProvider 新增的 prefixCls 属性及其用途，方便开发者理解和使用。

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[pkg-pr-new]

npm i https://pkg.pr.new/ant-design/ant-design-mobile/antd-mobile@6966

commit: d1de569

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.95%. Comparing base (bfde19d) to head (d1de569).

Additional details and impacted files

@@           Coverage Diff            @@
##           feature    #6966   +/-   ##
========================================
  Coverage    92.95%   92.95%           
========================================
  Files          337      337           
  Lines         7368     7370    +2     
  Branches      1871     1871           
========================================
+ Hits          6849     6851    +2     
  Misses         483      483           
  Partials        36       36           

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[gemini-code-assist]

Code Review

This pull request successfully unifies the way custom class prefixes are provided by introducing a getPrefixCls function in the ConfigProvider. The changes are well-implemented across the Button component, its tests, and the ConfigProvider itself. The documentation has also been updated accordingly.

I have one suggestion regarding performance optimization in the ConfigProvider component.

[gemini-code-assist]

For performance optimization, it's a good practice to memoize functions that are passed down through React context. The getPrefixCls function is recreated on every render of ConfigProvider, which can cause unnecessary re-renders in consuming components.

Consider wrapping getPrefixCls with useCallback to prevent this. You'll also need to import useCallback from react.

Here's an example:

  const getPrefixCls = useCallback((suffixCls?: string, customizePrefixCls?: string) => {
    if (customizePrefixCls) {
      return customizePrefixCls
    }
    const mergedPrefixCls =
      config.prefixCls || parentConfig.prefixCls || defaultPrefixCls
    return suffixCls ? `${mergedPrefixCls}-${suffixCls}` : mergedPrefixCls
  }, [config.prefixCls, parentConfig.prefixCls])