未校验用户邮箱格式

[zhanghuidinah]

Describe the bug
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To Reproduce
Steps to reproduce the behavior:

1. Go to '注册用户'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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• 有正确的格式校验

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Server Version

- Dashboard version:
- Kubernetes version:
- Wayne version:
- Node.js version:
- Go version:

Additional context
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