Missing password field pattern requirement

### Description of issue
Password pattern doesn't shown on this register page.

```
Path: /index.html
Browser: Chrome 111.0.0.0 on Windows 10
Viewport: 1504 x 860 @1.5x
Language: en-GB
Cookies: Enabled
```

[Open in BrowserStack](https://www.browserstack.com/user/try-live?url=https%3A%2F%2Fdeploy-preview-1--vanha.netlify.app%2Findex.html&os=Windows&os_version=10&browser=Chrome&browser_version=111.0&resolution=1504x860&speed=1&start=true&ref=netlify-source)

Submitted from [Netlify Deploy Preview #1](https://deploy-preview-1--vanha.netlify.app/index.html)

Start with /index.html and inspect the registration form's password field in Chrome. Confirm what password pattern requirement is expected from the surrounding form or project context, then verify that the pattern is visibly communicated and works during registration.

Written by the indexing model from the issue text.