fix: input hoverBg token

[MadCcc]

[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
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🔗 Related issue link

close #46942

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Input hover style in css var mode.
🇨🇳 Chinese	修复 Input 组件在 css 变量模式下的悬浮态样式问题。

☑️ 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

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[github-actions]

[github-actions]

Visual Regression Report for PR #46946 Passed ✅

Target branch: master (bceb6c4)

---

Congrats! No visual-regression diff found

[github-actions]

size-limit report 📦

Path	Size
./dist/antd.min.js	331.13 KB (+156 B 🔺)
./dist/antd-with-locales.min.js	376.95 KB (-58 B 🔽)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (bceb6c4) 100.00% compared to head (db7be02) 100.00%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #46946   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          732       732           
  Lines        12548     12548           
  Branches      3291      3291           
=========================================
  Hits         12548     12548           

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[github-actions]

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