fix: fix date-picker style

[li-jia-nan]

[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
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• Other (about what?)

🔗 Related issue link

• close 日期组件样式错误 #44638

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	fix: fix date-picker style
🇨🇳 Chinese	修复 date-picker 自定义页脚样式问题

☑️ Self-Check before Merge

⚠️ Please check all items below before requesting a reviewing. ⚠️

• 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

---

🚀 Summary

🤖 Generated by Copilot at 1369f7b

Fix date picker layout and code style. Update index.ts to use consistent indentation, spacing, and imports.

🔍 Walkthrough

🤖 Generated by Copilot at 1369f7b

• Fix missing unit in padding value of date picker extra selector (link)
• Add empty line at the beginning of index.ts file (link)

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[github-actions]

[github-actions]

size-limit report 📦

Path	Size
./dist/antd.min.js	387.75 KB (-3 B 🔽)
./dist/antd-with-locales.min.js	446.8 KB (-3 B 🔽)

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Build	Status	Details	Updated (UTC)
default (Inspect)	👍 Changes approved	1 change	Sep 5, 2023, 10:35 AM

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (03fee8d) 100.00% compared to head (4b27a4b) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #44642   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          666       666           
  Lines        11294     11294           
  Branches      3053      3053           
=========================================
  Hits         11294     11294           

Files Changed	Coverage Δ
components/date-picker/style/index.ts	100.00% <ø> (ø)

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