Add an application-level smoke test for /.well-known/openid-configuration
and a direct IResourceStore check so the IdentityServer8 mapper failure is
caught from the Yavsc side.
Bump HigginsSoft.IdentityServer8 packages to 8.1.0-pazofrc007, which
includes the EntityFramework mapper fix removing the failing AutoMapper
static initialization.
This closes the 500 on OIDC discovery and restores remoting/auth flows
that depend on discovery metadata.