fix(comp:dropdown): update style with dark menu

[danranVm]

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?

• 在 dropdown 内的 menu 使用 dark 的时候，背景色会被覆盖
• 修复了 ProTableColumn 的类型错误
• Seer 主题下的 alert warring 文字颜色不正确

What is the new behavior?

Other information

[idux-bot]

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[codecov]

Codecov Report

Merging #1313 (1c821ce) into main (7613e9d) will not change coverage.
The diff coverage is n/a.

❗ Current head 1c821ce differs from pull request most recent head 7f610e0. Consider uploading reports for the commit 7f610e0 to get more accurate results

@@           Coverage Diff           @@
##             main    #1313   +/-   ##
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  Coverage   93.07%   93.07%           
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  Files         324      324           
  Lines       29979    29979           
  Branches     3391     3391           
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  Hits        27903    27903           
  Misses       2076     2076           

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