PYSEC-2026-1711 Globus `identity_provider` restriction ignored when used with `allow_all` in JupyterHub 5.0

Impact JupyterHub 5.0, when used with GlobusOAuthenticator, could be configured to allow all users from a particular institution only. The configuration for this would look like: python Require users to be using the "foo.horse" identity provider, often an institution or university...