docs: render elplus vnode demo

[lisiyuesuxiya]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
• Refactoring
• Update dependency
• Code style optimization
• Test Case
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• [√ ] Demo update
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🔗 Related issue link

#5061

💡 Background and solution

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🇨🇳 Chinese

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

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🚀 Summary

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🔍 Walkthrough

copilot:walkthrough

[fangsmile]

@lisiyuesuxiya
代码有点问题，新增的依赖包不要放到dependencies中。
docs/demos中en也需要补上
请将修改后 运行 rush docs 启动站点的demo截图效果贴出来吧

[lisiyuesuxiya]

@lisiyuesuxiya 代码有点问题，新增的依赖包不要放到dependencies中。 docs/demos中en也需要补上 请将修改后 运行 rush docs 启动站点的demo截图效果贴出来吧

您好😊 ，请问是否可以在window上添加ElementPlus组件，因为需要在app.mount()之前使用app.use(ElementPlus)，在rush docs的demo示例文档结构中无法在mount之前获取挂载,只能在onmounted之后，此时已经无法在重新app.use。如有更好方式，期待回复。