ClientRegistrations now provides the fromOidcConfiguration
method to create a ClientRegistration.Builder from a map
representation of an OpenID Provider Configuration Response.
This is useful when the OpenID Provider Configuration is not
available at a well-known location, or if custom validation
is needed for the issuer location (e.g. if the issuer is only
reachable via a back-channel URI that is different from the
issuer value in the configuration).
Fixes: gh-14633
a3fd551fb5