Symfony version(s) affected: 5.3.2

Description
a combination of json_login_ldap and json_login will not work when the new authentication manager is enabled. They both
on their own work properly but not in combination. When new authentication manager is disabled they work properly together
in a chain.

How to reproduce
see attached repository with 4 different configuration cases to reproduce:
https://github.com/oliverreese/symfony-security-ldap-login

Possible Solution

Additional context