fix(comp:header): remove breakground-color

[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?

• 移除了 header 的背景色
• 移除 pagination 的 disabled 状态下的背景色
• ProTree 的 header 高度最小 40px

What is the new behavior?

Other information

[idux-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #1392 (004c5e3) into main (81ff47e) will not change coverage.
The diff coverage is n/a.

❗ Current head 004c5e3 differs from pull request most recent head 556a3f2. Consider uploading reports for the commit 556a3f2 to get more accurate results

@@           Coverage Diff           @@
##             main    #1392   +/-   ##
=======================================
  Coverage   92.87%   92.87%           
=======================================
  Files         324      324           
  Lines       29820    29820           
  Branches     2481     2481           
=======================================
  Hits        27695    27695           
  Misses       2125     2125           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.