style: add rtl.less of InputNumber

[xrkffgg]

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

#22420
#22239

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Add InputNumber RTL style
🇨🇳 Chinese	增加 InputNumber RTL 模式

☑️ 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

[ant-design-bot]

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[codecov]

Codecov Report

Merging #22434 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master   #22434   +/-   ##
=======================================
  Coverage   98.08%   98.08%           
=======================================
  Files         306      306           
  Lines        7061     7061           
  Branches     1893     1939   +46     
=======================================
  Hits         6926     6926           
  Misses        135      135

Impacted Files	Coverage Δ
components/input-number/index.tsx	100% <100%> (ø)	⬆️

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