[Feedback] AppRouting istiod high resource requests

Using the Gateway API based Approuting with Istio (without the service mesh), comes with rather high resource requests for the `istiod` pod in the `aks-istio-system` namespace.
The requests are:
- `cpu: 500m`
- `memory: 2Gi`

As the hpa defines a minimum of 2 replicas, 1 CPU and 4Gi memory are needed just for the istiod, not even a gateway deployed.
As far as I saw in the documentation, there is currently no way to override these, e.g. in a Configmap like it is possible for the Gateway deployment.

For our test/staging clusters these requests are completely overscaled based on the usage I see and I even needed to add an additional node to fulfill the requests.

Maybe you can reconsider the requests resources, I wonder if they are really needed for `istiod` just for the Gateway API without using the service mesh?
Additionally it would be also nice to provide a way to override them.