2.0.0-beta.4

• 🌟 Remove polyfills that are no longer used
• 🐞 Fix the problem of calling Modal afterClose twice
• 🐞 Supplement the declaration that ts type files lack native attributes

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• 🌟 移除不再使用的 polyfill
• 🐞 修复 Modal afterClose 调用两次的问题
• 🐞 补充 ts 类型文件缺少原生属性的声明