[Frontend] Add group scope option for policy list

Why are we doing this work

1. Adding new policy scope for groups needs to be reflected in policy list scope column

Relevant links

Non-functional requirements

• Documentation:
• Feature flag: policy_group_scope
• Performance:
• Testing:

Implementation plan

1. Update ee/security_orchestration/components/policies/list_component_scope.vue to support new group options
2. Update ee/security_orchestration/graphql/fragments/policy_scope.fragment.graphql to include new group option
3. Make sure changes are also reflected in a drawer
4. Add tests

Verification steps