auth_signup_verify_email: raises ValueError when your signup form has custom fields

[gbrito]

Module

auth_signup_verify_email

Describe the bug

If your signup form has custom fields, it will raise an error because it tries to create an user with all fields from the signup form

To Reproduce

Affected versions: All

Steps to reproduce the behavior:

1. Add custom field to the signup form
2. Try to register with a valid email

Expected behavior
A user should be created and logged in

Additional context
Issue comes from here