virtualmachinestoragemigrationplan is not ready for a stopped/paused VM

CNV-v4.21.0.rhel9-122

Always

1. Create a VM and stop it
2. Create a virtualmachinestoragemigrationplan
3. Check the virtualmachinestoragemigrationplan status  

The virtualmachinestoragemigrationplan is never ready due to the vm is not ready
$ oc get virtualmachinestoragemigrationplan
NAME        READY   PROGRESSING   COMPLETED VMS   AGE
vmscplan1   False   False         0/1             11s

$ oc describe virtualmachinestoragemigrationplan
Name:         vmscplan1
Namespace:    mig1
Labels:       <none>
Annotations:  <none>
API Version:  migrations.kubevirt.io/v1alpha1
Kind:         VirtualMachineStorageMigrationPlan
Metadata:
  Creation Timestamp:  2026-01-06T12:20:08Z
  Generation:          1
  Resource Version:    1467569
  UID:                 20b40e10-e277-4a35-b171-f1e3b4d44806
Spec:
  Virtual Machines:
    Name:  centos
    Target Migration PV Cs:
      Destination PVC:
        Access Modes:
          Auto
        Name:                centos-new-pvc
        Storage Class Name:  ocs-storagecluster-ceph-rbd
        Volume Mode:         Auto
      Volume Name:           rootdisk
Status:
  Completed Out Of:  0/1
  Conditions:
    Category:              Critical
    Last Transition Time:  2026-01-06T12:20:08Z
    Message:               No virtual machines are ready for storage migration
    Reason:                NotReady
    Status:                True
    Type:                  NotAllVirtualMachinesReady
    Category:              Required
    Last Transition Time:  2026-01-06T12:20:08Z
    Message:               plan has one or more critical conditions
    Status:                False
    Type:                  Ready
    Category:              Required
    Last Transition Time:  2026-01-06T12:20:08Z
    Message:               no storage migrations found
    Status:                False
    Type:                  Progressing
  Suffix:                  gxzl
Events:                    <none>

Storage class migration can be working well for a stopped/paused vm

stopped VM can do storage class migration by MTC