Invalid domain used when ldap record doesn't have email field

[pezhovski]

Description

When syncing users from ldap, if user doesn't have email field, username@localhost is used https://github.com/go-gitea/gitea/blob/v1.17.2/services/auth/source/ldap/source_sync.go#L88

Later when trying to edit this user from admin page, I'm getting an error that email is invalid

Gitea Version

1.17.0

Can you reproduce the bug on the Gitea demo site?

No

Log Gist

No response

Screenshots

No response

Git Version

No response

Operating System

No response

How are you running Gitea?

Downloaded binary from release page, run with systemd

Database

No response