Describe the bug

Role entities are not being created in the authorize_unsigned interface causing policies like below:

permit(
  principal in Jans::Role::"Admin",
  action,
  resource
);

With an entity attributes like:

{
    "type": "Jans::User",
    "role": ["Admin"]
}

to always result in a DENY.

To Reproduce
Steps to reproduce the behavior:

1. Define a User entity with a Role parent in the Cedar schema:

    entity Role;
    entity User in [Role] = { ... };

2. Define a policy that checks for the role:

permit(
  principal in Jans::Role::"Admin",
  action,
  resource
);

3. Call cedarling::authorize_unsigned with a principal attributes that contains a Role

{
    "type": "Jans::User",
    "role": ["Admin"]
}

4. Get a DENY result

Expected behavior

• The result should be ALLOW
• The Role entity should be created