How to use an Azure internal load balancer in ServiceMesh 2.x?

Issue

The upstream Istio documentation states that the "k8s" section must be used in the IstioOperator section:

apiVersion: install.istio.io/v1beta1
kind: IstioOperator
spec:
  profile: default
  components:
    ingressGateways:
      - name: internal-ingressgateway
        enabled: true
        k8s:
          serviceAnnotations:
            service.beta.kubernetes.io/azure-load-balancer-internal: "true"

However the ServiceMeshControlPlane does not accept this configuration for the ingress, and the configuration is removed once it's applied.