[Frontend integration] Add integration tests for group scoping

Integration tests

Location: spec/frontend_integration/security_orchestration/policy_scope

Test scenarios	Completed	Notes
Adding group scope to a group	✅	!165686 (merged)
Rendering scope column for group policy scope in policy list	✅	!167334 (merged)
Rendering scope section for group policy scope in a drawer	✅	!167334 (merged)