Description of problem:

When creating a Policy to enforce a Role object, the Create Policy wizard raises an incorrect validation error if the core apigroup is utilized ("") within a Rule.

For example the following is flagged by the UI as invalid

                kind: Role
                metadata:
                  name: pods-get-only
                rules:
                  - apiGroups:
                      - ""
                    resources:
                      - pods
                    verbs:
                      - get

Attaching a screenshot from the UI that shows the issue more clearly.

Version-Release number of selected component (if applicable):

2.12.2, confirmed on 2.11.3 as well.

How reproducible:

Fully reproducible

Steps to Reproduce:

Actual results:

Expected results:

Additional info: