chore: add pnpm workspace and pnpm manage limit

[HaixingOoO]

🤔 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

• refactor: mono repo move src to packages/components #3402

💡 需求背景和解决方案

📝 更新日志

• chore: add pnpm workspace and pnpm manage limit

• chore: run site and build productions within packages/tdesign-react

• 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

[github-actions]

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PR Overview

This PR introduces support for a pnpm workspace setup along with enhancements to workflow management for building, testing, and previewing deployments. Key changes include the addition of new GitHub Actions jobs for preview deployments, updates to the pull-request workflow to integrate pnpm and email validations, and modifications in example files to update component import paths.

Reviewed Changes

File	Description
.github/workflows/preview-publish.yml	Added new jobs for handling successful and failed preview deployments via Surge.
.github/workflows/pull-request.yml	Introduced new jobs for email verification, testing, site generation, and build processes using pnpm.
packages/components//_example/.tsx	Updated import paths from 'tdesign-react' to '@tdesign/components' for consistency.

Copilot reviewed 679 out of 679 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (2)

.github/workflows/preview-publish.yml:26

• Consider adding a check to verify that pr-id.txt exists before reading it. This can help avoid potential runtime errors if the artifact is not available.

run: echo "id=$(<pr-id.txt)" >> $GITHUB_OUTPUT

.github/workflows/pull-request.yml:24

• [nitpick] Consider providing a clearer, more detailed error message that guides the user on how to resolve the email validation issue.

echo "默认邮箱 $log_emails 校验非法，可以去 https://github.com/settings/emails 更改"