feat: 用RAF实现setTimeout

[chj-damon]

[中文版模板 / Chinese template]

🤔 This is a ...

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

🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	implement setTimeout with requestAnimationFrame
🇨🇳 Chinese	用requestAnimationFrame实现setTimeout

☑️ Self Check before Merge

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• 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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✅ chj-damon
❌ chj_damon

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[brickspert]

LGTM

[brickspert]

一些优化：a4d0e28