Enhance dashboard 'Kubernetes / Compute Resources / Namespace (Pods)' to not display namespace without any pod

Description of problem:
On hypershift guest cluster, many namespaces have no pod but have service only referring the following list. Open Dashboard 'Kubernetes / Compute Resources / Namespace (Pods)' and select any of the namespace, no data will display.
% oc -n kube-node-lease get pod
No resources found in kube-node-lease namespace.
% oc -n kube-public get pod
No resources found in kube-public namespace.
% oc -n openshift get pod
No resources found in openshift namespace.
% oc -n openshift-apiserver get pod
No resources found in openshift-apiserver namespace.
% oc -n openshift-kube-apiserver get pod
No resources found in openshift-kube-apiserver namespace.
% oc -n openshift-kube-apiserver-operator get pod
No resources found in openshift-kube-apiserver-operator namespace.
% oc -n openshift-apiserver-operator get pod
No resources found in openshift-apiserver-operator namespace.
% oc -n openshift get pod
No resources found in openshift namespace.
% oc -n openshift-authentication get pod
No resources found in openshift-authentication namespace.
% oc -n openshift-authentication-operator get pod
No resources found in openshift-authentication-operator namespace.
% oc -n openshift-cloud-credential-operator get pod
No resources found in openshift-cloud-credential-operator namespace.
% oc -n openshift-cluster-version get pod
No resources found in openshift-cluster-version namespace.
% oc -n openshift-cluster-version get all
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/cluster-version-operator ClusterIP 172.31.140.236 <none> 9099/TCP 7h19m

Version-Release number of selected component (if applicable):
4.11.0-0.nightly-2022-05-20-213928

How reproducible:
always

Steps to Reproduce:
1. Open management console of hypershift guest cluster
2. Go to Observe->Dashboards
3. Select Dashboard 'Kubernetes / Compute Resources / Namespace (Pods)', from namespace drop&down list, there are many namespaces without any pod, when select such namespace, no data will display