feat(site-components): optimize overflow style of description content

[RSS1102]

🤔 这个 PR 的性质是？

• 日常 bug 修复
• 新特性提交
• 文档改进
• 演示代码改进
• 组件样式/交互改进
• CI/CD 改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 其他

🔗 相关 Issue

💡 需求背景和解决方案

• 超过两行隐藏，然后通过 popup 展示全部内容；badge 不在 overflow。

• 添加一个 popup 展示全部的文本

📝 更新日志

• feat(site-components): 组件描述内容文本只展示两行

• 本条 PR 不需要纳入 Changelog

☑️ 请求合并前的自查清单

⚠️ 请自检并全部勾选全部选项。⚠️

• 文档已补充或无须补充
• 代码演示已提供或无须提供
• TypeScript 定义已补充或无须补充
• Changelog 已提供或无须提供

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/Tencent/tdesign/@tdesign/site-components@745

npm i https://pkg.pr.new/Tencent/tdesign/tdesign-theme-generator@745

commit: baf3730

[tdesign-bot]

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Sites (8)

Component	Preview
tdesign-site
tdesign-vue
tdesign-react
tdesign-vue-next
@tdesign-vue-next/chat
tdesign-mobile-vue
tdesign-mobile-react
tdesign-miniprogram

[tencent-adm]

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