As requested in
https://github.com/go-gitea/gitea/pull/31504#issuecomment-2196196646.
This PR refactor the login page:



# Changes
- [x] use separate box for passkey login and go to registration
- [x] move forgot passoword next to password label
- [x] fix password required label `*` and padding
- [x] remove tabs from login page
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Co-authored-by: silverwind <me@silverwind.io>