Spike: users without a role can't log in

Steps to reproduce

When a user is added without any groups (or groups without roles) it can't login:

• Log in as admin
• Create a new user, leave all groups unchecked
• Log out
• Try to login as the new user
  --> login does not work

Cause

• In INTEGRATED-1348 Closed a new role is added to the token. This role is now required to log into Integrated
• When the users doesn't have roles the eventlistener isn't fired
• https://symfony.com/doc/current/security.html#roles "Make sure every user has at least one role, or your user will look like they're not authenticated. A common convention is to give every user ROLE_USER"

Solution

• The best solution would be to add a ROLE_USER when the "Enable login" is enabled
• Another option is to force ROLE_USER in the database for every user, but I don't like that solution