fix: Dropdown should not display when items is empty array

[afc163]

[中文版模板 / Chinese template]

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🔗 Related issue link

💡 Background and solution

close #47373

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Dropdown should not display when items is empty array
🇨🇳 Chinese	修复 Dropdown menu.items 为空时依然显示的问题。

☑️ Self-Check before Merge

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[github-actions]

👁 Visual Regression Report for PR #47375 Passed ✅

🎯 Target branch: master (a4c4c47)
📖 View Full Report ↗︎

🎊 Congrats! No visual-regression diff found.

[github-actions]

[github-actions]

size-limit report 📦

Path	Size
./dist/antd.min.js	333.46 KB (+72 B 🔺)
./dist/antd-with-locales.min.js	379.41 KB (+54 B 🔺)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a4c4c47) 100.00% compared to head (6b1cf6d) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #47375   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          734       734           
  Lines        12593     12593           
  Branches      3298      3298           
=========================================
  Hits         12593     12593           

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[MadCcc]

还是会有阴影

[zombieJ]

印象里，windows 的菜单空的时候右击还会显示。但是有个 [空]，来表示交互是有效的。（图找了一圈没找到。。。）

[github-actions]

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