style: fix Table expand icon style in Firefox

[afc163]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
• Internationalization
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

close #29848
close #29303
close #30408

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Table broken expand icon style in Windows Firefox.
🇨🇳 Chinese	修复 Table 展开图标在 Windows Firefox 下显示异常的问题。

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[github-actions]

[yoyo837]

ref: #29214

[codecov]

Codecov Report

Merging #30410 (0bc733a) into master (387b9fd) will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #30410      +/-   ##
===========================================
+ Coverage   99.97%   100.00%   +0.02%     
===========================================
  Files         398       397       -1     
  Lines        7661      7513     -148     
  Branches     2160      2103      -57     
===========================================
- Hits         7659      7513     -146     
+ Misses          2         0       -2     

Impacted Files	Coverage Δ
components/space/Item.tsx	100.00% <0.00%> (ø)
components/upload/Upload.tsx	100.00% <0.00%> (ø)
components/page-header/index.tsx	100.00% <0.00%> (ø)
components/statistic/Countdown.tsx	100.00% <0.00%> (ø)
components/upload/UploadList/ListItem.tsx	100.00% <0.00%> (ø)
components/_util/hooks/useFlexGapSupport.ts
components/space/index.tsx	100.00% <0.00%> (+4.08%)	⬆️

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[afc163]

检查了一下 #29214 ，去掉这行后貌似更对齐了。

[github-actions]

Size Change: -22 B (0%)

Total Size: 830 kB

Filename	Size	Change
./dist/antd.compact.min.css	63.9 kB	-7 B (0%)
./dist/antd.dark.min.css	65.2 kB	-7 B (0%)
./dist/antd.min.css	63.9 kB	-8 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
./dist/antd-with-locales.min.js	339 kB	0 B
./dist/antd.min.js	298 kB	0 B

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