docs(theme): Replace card deprecated API 'bodyStyle'

[thinkasany]

中文版模板 / Chinese template

🤔 This is a ...

• [ ] New feature
• [ ] Bug fix
• [x] Site / documentation update
• [ ] Demo update
• [ ] Component style update
• [ ] TypeScript definition update
• [ ] Bundle size optimization
• [ ] Performance optimization
• [ ] Enhancement feature
• [ ] Internationalization
• [ ] Refactoring
• [ ] Code style optimization
• [ ] Test Case
• [ ] Branch merge
• [ ] Workflow
• [ ] Other (about what?)

🔗 Related issue link

💡 Background and solution

替换theme中card 废弃的api

📝 Changelog

Language	Changelog
🇺🇸 English	fix(theme): Replace card deprecated API 'bodyStyle'
🇨🇳 Chinese	fix(theme): 替换废弃的api bodyStyle的使用

☑️ Self-Check before Merge

⚠️ Please check all items below before requesting a reviewing. ⚠️

• [x] Doc is updated/provided or not needed
• [x] Demo is updated/provided or not needed
• [x] TypeScript definition is updated/provided or not needed
• [x] Changelog is provided or not needed

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👁 Visual Regression Report for PR #48644 Passed ✅

🎯 Target branch: master (bf330cbedbdc995e045953a3c13fa14915e8594b) 📖 View Full Report ↗︎

🎊 Congrats! No visual-regression diff found.

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