Status is not descriptive in case pod cannot be evicted

[rollandf]

For example if delete-emptydir-data was not specified and there are such pod, it is not reflected in the Status.

Note that 'GetPodsForDeletion' returns sometimes a pod list and an error. Maybe this can be used to reflect in the status.

See here:

2025-09-09T11:01:27.758502826Z	ERROR	controller/nodemaintenance_controller.go:166	failed to handle drain state for NodeMaintenance object	{"controller": "nodemaintenance", "controllerGroup": "maintenance.nvidia.com", "controllerKind": "NodeMaintenance", "NodeMaintenance": {"name":"network-operator-c-236-2-60-065","namespace":"default"}, "namespace": "default", "name": "network-operator-c-236-2-60-065", "reconcileID": "886c7c39-0c7c-4684-9b23-9b0e48cf0a0d", "error": "failed to update drain status. failed to get pods for deletion. cannot delete Pods with local storage (use --delete-emptydir-data to override): kube-system/rke2-metrics-server-69bdccfdd9-28jjq"}
2025-09-09T11:01:27.758564238Z	INFO	controller/nodemaintenance_controller.go:175	reconcile NodeMaintenance request end	{"controller": "nodemaintenance", "controllerGroup": "maintenance.nvidia.com", "controllerKind": "NodeMaintenance", "NodeMaintenance": {"name":"network-operator-c-236-2-60-065","namespace":"default"}, "namespace": "default", "name": "network-operator-c-236-2-60-065", "reconcileID": "886c7c39-0c7c-4684-9b23-9b0e48cf0a0d"}
2025-09-09T11:01:27.758606651Z	ERROR	controller/controller.go:316	Reconciler error	{"controller": "nodemaintenance", "controllerGroup": "maintenance.nvidia.com", "controllerKind": "NodeMaintenance", "NodeMaintenance": {"name":"network-operator-c-236-2-60-065","namespace":"default"}, "namespace": "default", "name": "network-operator-c-236-2-60-065", "reconcileID": "886c7c39-0c7c-4684-9b23-9b0e48cf0a0d", "error": "failed to update drain status. failed to get pods for deletion. cannot delete Pods with local storage (use --delete-emptydir-data to override): kube-system/rke2-metrics-server-69bdccfdd9-28jjq"}