fix: prevent password init on email verification for external users (#8602)

# Which Problems Are Solved

If a user is created through the login UI with an IdP and an unverified
email, the user is prompted with the email verification and to set a
password.
This was unintentionally changed with #8291

# How the Problems Are Solved

- Check if the user has any IdP linked when computing the
EmailVerification step.

# Additional Changes

None

# Additional Context

- reported in a support request

internal/auth/repository/eventsourcing/eventstore/auth_request.go

@@ -1092,7 +1092,7 @@ func (repo *AuthRequestRepo) nextSteps(ctx context.Context, request *domain.Auth
 	}
 	if !user.IsEmailVerified {
 		steps = append(steps, &domain.VerifyEMailStep{
-			InitPassword: !user.PasswordSet,
+			InitPassword: !user.PasswordSet && len(idps.Links) == 0,
 		})
 	}
 	if user.UsernameChangeRequired {