fix: steps rtl style

[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

#22239

💡 Background and solution

• rtl.less 拆分引起：由于 css 顺序原因，导致 RTL 下，title 未居中。

📝 Changelog

Language	Changelog
🇺🇸 English	none
🇨🇳 Chinese	none

☑️ 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 #22523 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #22523   +/-   ##
=======================================
  Coverage   98.16%   98.16%           
=======================================
  Files         306      306           
  Lines        7070     7070           
  Branches     1943     1944    +1     
=======================================
  Hits         6940     6940           
  Misses        130      130

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