fix: resolve table header blank display issue

[afc163]

ant-design/ant-design#42511
ant-design/ant-design#42544

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Project	Deployment	Preview	Comments	Updated (UTC)
table	Ready	Preview	Comment	Sep 6, 2025 3:02pm

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[gemini-code-assist]

Summary of Changes

Hello @afc163, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request resolves a display bug affecting table headers in the FixedHolder component. By removing a problematic visibility style property, it ensures that table headers are consistently rendered, improving the user experience by preventing blank or hidden header rows.

Highlights

• Table Header Visibility: Removed a conditional "visibility: hidden" style from the TableComponent within FixedHolder, which was causing the table header to be blank or hidden under certain conditions.
• Bug Fix: Addresses the issue described in ant-design/ant-design#42511, where table headers were not displaying correctly.

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[gemini-code-assist]

Code Review

This pull request effectively resolves an issue where the table header would not display, which was caused by a deadlock in the rendering logic. The fix involves removing a visibility: 'hidden' style that prevented column widths from being calculated. While this is a direct solution, I've suggested a more nuanced approach to retain the original flicker-prevention behavior in scenarios where it doesn't cause issues.

[afc163]

表头闪烁的问题已经修掉了，因此 #507 这里的改动不需要了，表头不需要先隐藏。

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.74%. Comparing base (8c37e7f) to head (40f965e).
⚠️ Report is 2 commits behind head on antd-5.x.

Additional details and impacted files

@@             Coverage Diff              @@
##           antd-5.x    #1345      +/-   ##
============================================
- Coverage     97.75%   97.74%   -0.01%     
============================================
  Files            77       77              
  Lines          7660     7631      -29     
  Branches       1162     1160       -2     
============================================
- Hits           7488     7459      -29     
  Misses          166      166              
  Partials          6        6              

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