fix: top border of the table summary row

[PeachScript]

[中文版模板 / Chinese template]

🤔 This is a ...

• Bug fix

🔗 Related issue link

close #31337

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix missing top border of the first cell in table summary.
🇨🇳 Chinese	修复表格总结栏第一个单元格上边框消失的问题。

☑️ 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]

[codecov]

Codecov Report

Merging #31363 (4a5e4ac) into master (5d8e93b) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master    #31363   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          397       397           
  Lines         7567      7567           
  Branches      2134      2134           
=========================================
  Hits          7567      7567           

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[github-actions]

Size Change: +2 B (0%)

Total Size: 832 kB

Filename	Size	Change
./dist/antd.dark.min.css	65.6 kB	+1 B (0%)
./dist/antd.min.css	64.4 kB	+1 B (0%)

ℹ️ View Unchanged

Filename	Size
./dist/antd-with-locales.min.js	341 kB
./dist/antd.compact.min.css	64.3 kB
./dist/antd.min.js	297 kB

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