PodLevelResources feature is not supported on Windows OS. Add the necessary validation logic to reject pods for Windows.

From the KEP #2837, until full Windows support for pod-level resource specifications is implemented, the behavior for pods, with pod-level resources, targeting Windows is as follows:

• API Server Validation: If the spec.os.name field in the Pod specification is explicitly set to "windows", the Kubernetes API server will generally reject the pod during validation.

  Add the following logic in validatePodResources
  // windows pods are not supported.
  if oldPod.Spec.OS != nil && oldPod.Spec.OS.Name == core.Windows && pod level resources are set {
  return field.ErrorList....
  }

• Kubelet Admission: The Kubelet running on a Windows node would reject the pod, with pod-level resources, during admission.

  Add IsPodLevelResourcesAllowed in features_windows.go, features_linux.go and features_unsupported.go (example - ref
  and call this method from SyncPod) if pod level resources are set in the spec