feat(comp:tree): expandIcon prop supports render function now

[sallerli1]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines
• Tests for the changes have been added/updated or not needed
• Docs and demo have been added/updated or not needed

What is the current behavior?

What is the new behavior?

Tree expandIcon prop 支持传入渲染函数，全局配置同样支持，方便全局自定义子组件库或主题的展开图标

Other information

[idux-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #1586 (c1c3b62) into main (501a7b5) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head c1c3b62 differs from pull request most recent head 6fad42c. Consider uploading reports for the commit 6fad42c to get more accurate results

@@           Coverage Diff           @@
##             main    #1586   +/-   ##
=======================================
  Coverage   92.76%   92.76%           
=======================================
  Files         332      332           
  Lines       30699    30717   +18     
  Branches     2568     2567    -1     
=======================================
+ Hits        28477    28495   +18     
  Misses       2222     2222           

Impacted Files	Coverage Δ
packages/components/config/src/types.ts	100.00% <100.00%> (ø)
packages/components/tree-select/src/types.ts	99.37% <100.00%> (+0.03%)	⬆️
packages/components/tree/src/types.ts	99.66% <100.00%> (+<0.01%)	⬆️
packages/pro/tree/src/types.ts	100.00% <100.00%> (ø)