chore: improve TS definition syntax

[Wxh16144]

试图解决：ant-design/ant-design#51171

问题过程：

发现 antd 的构建产物是有问题的：ref: https://npmmirror.com/package/antd/files/es/theme/util/genStyleUtils.d.ts?version=5.21.3#L6

追踪构建产物，发现是 cssinjs-utils 的构建产物长这样：https://npmmirror.com/package/@ant-design/cssinjs-utils/files/es/util/genStyleUtils.d.ts?version=1.1.0#L67-L68

上面这个 cssinjs-utils 的构建产物很奇怪，不缺定是不是 tsc 的问题还是 father 构建的问题。 @PeachScript 大佬有空可以帮忙看看，

解决方案

改用 Partial<Record<>> 代替 { [key in xxx]: xxx }. 方案。

最后 cssinjs-utils 的构建产物长这样：

能解决 antd 侧构建出来的内容缺少类型定义

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.71%. Comparing base (4d829bf) to head (20ae058).
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #26      +/-   ##
==========================================
+ Coverage   84.00%   84.71%   +0.71%     
==========================================
  Files          11       11              
  Lines         300      301       +1     
  Branches       73       80       +7     
==========================================
+ Hits          252      255       +3     
+ Misses         48       46       -2     

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