Description of problem:

Conditional Policies, Policies, Roles are stay after removing external files

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Define csv permission policy file, conditional policies file, or both of them. Defined them in the rbac-backend plugin configuration.
2. Start backstage-plugins instance.
3. Login like permission admin and check that roles, permission policies and conditional policies was applied from external files.
4. Stop instance. Remove policies files from configuration.
5. Start backstage-plugin instance again. Go to permission admin UI.

Actual results:

Permission policies, conditional policies and roles from external files should be removed.

Expected results:

Permission policies, conditional policies and roles from external files are still present.

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

Additional info (Such as Logs, Screenshots, etc):