Issue: Support accessEntryType in access entries configuration

Issue: Support accessEntryType in access entries configuration: a task in LegoFlow-SWE (Harbor dataset). For standard (non-node) access entries, the existing validation rules must continue to apply: - kubernetesGroups with system: prefix must still be rejected. - policyARN / accessPolicies and…

The task

For **standard** (non-node) access entries, the existing validation rules must continue to apply: - `kubernetesGroups` with `system:` prefix must still be rejected. - `policyARN` / `accessPolicies` and `accessScope.type` remain required where applicable, and errors like `accessScope.type must be set to either…

Part of Lego-X/LegoFlow-SWE.