*::Custom do not allow config overrides

Concerned version

Version: 2.0.13

Summary

• Configure Auth Choice with
• Choice 1: Custom Auth, Custom UserDB
• Choice 2: Custom Auth, Custom UserDB, override nullAuthnLevel =5
• set customAuth = customUserDB = Null
• set global nullAuthnLevel to 0
• Login with choice 2
  • authenticationLevel is 0

Possible fixes

Transmit the config from received $self to the concrete module constructor

Custom probably needs to be overhauled, see #2676 (closed) and #2675 (closed)