Description of problem: There's one AKS cluster, observability addon deployed on it, metrics data displaying on the Grafana dashboards. But this AKS is not in the cluster list on some dashboards.

Version-Release number of selected component (if applicable): 2.8.0-155

How reproducible:

Steps to Reproduce:

1. Deploy MCOCR
2. Observability addon is deployed on the AKS cluster
3. open the grafana General / ACM - Clusters Overview Dashboard, AKS cluster data are displaying correctly
   
4. But navigate to `General / ACM - Resource Optimization / Cluster`, the AKS cluster is not in the cluster dorp-down list
   
5. This issue also existing on some other dashboards, like
   General / USE Method / Cluster
   General / Kubernetes / Compute Resources / Pod
   General / Kubernetes / Compute Resources / Namespace (Workloads)
   General / Kubernetes / Compute Resources / Namespace (Pods)

Actual results:

Expected results:

Additional info: