fix(comp:*): theme token css var getter is not supported in safari

[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?

将主题token转换成css变量的正则表达式在safari下不兼容

What is the new behavior?

修改转换函数，不再用正则实现

Other information

[idux-bot]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.74%. Comparing base (58cef19) to head (c87e015).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1897   +/-   ##
=======================================
  Coverage   90.74%   90.74%           
=======================================
  Files         359      359           
  Lines       35264    35264           
  Branches     2807     2807           
=======================================
  Hits        32002    32002           
  Misses       3262     3262           

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