Agencies with API backends that have multiple URL prefixes don't have permissions to access their API backend configuration

[GUI]

In the new admin permissions setup, if an API backend is composed of multiple unique URL prefixes, we had setup scopes for each one of those URL prefixes and granted permissions to those separate scopes. The intention was that any admin that had permissions for all the prefixes contained in an API backend would be able to administer those API backends. However, due to a bug in the permissions logic, this was note the case, and agencies that had API backends involving multiple, distinct URL prefixes were forbidden. I believe the only agency this affected was FDA.

[GUI]

Fixed by NREL/api-umbrella-web@6e5459e and tests added for this multi-url prefix scenario.