fix: Remove useless form textarea height

[zombieJ]

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
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🔗 Related issue link

resolve #22785

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix Textarea with clearIcon additional margin in Form.Item.
🇨🇳 Chinese	修复 Textarea 配置 clearIcon 在 Form.Item 下会有额外的 margin 的问题。

☑️ 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 #22793 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #22793   +/-   ##
=======================================
  Coverage   98.28%   98.28%           
=======================================
  Files         361      361           
  Lines        7212     7212           
  Branches     1971     1971           
=======================================
  Hits         7088     7088           
  Misses        124      124

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