Description of problem:
Better to have a more friendly error when missing storage size in clone

Version-Release number of selected component (if applicable):
CNV 4.12

How reproducible:
Always

Steps to Reproduce:
1. Clone from a pvc without setting storage size in DataVolume.spec.storage.resources

—
apiVersion: cdi.kubevirt.io/v1beta1
kind: DataVolume
metadata:
name: clone4
annotations:
cdi.kubevirt.io/cloneType: ""
cdi.kubevirt.io/storage.bind.immediate.requested: "true"
cdi.kubevirt.io/storage.deleteAfterCompletion: "false"
spec:
source:
pvc:
name: fedora-56ccabc01cbe
namespace: openshift-virtualization-os-images
storage:
resources: {}

Actual results:
1. The DV keeps in CloneScheduled status, no progress
2. Describe the dv, only got warning "The size detection pod is not finished yet"
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal SizeDetectionPodCreated 4m44s datavolume-controller Size-detection pod created
Normal CloneScheduled 4m44s datavolume-controller Cloning from openshift-virtualization-os-images/fedora-56ccabc01cbe into default/clone4 scheduled
Normal CloneScheduled 4m44s datavolume-controller No PVC found
Normal SizeDetectionPodNotReady 4m42s (x11 over 4m44s) datavolume-controller The size detection pod is not finished yet
Warning HostAssistedCloneSourceInUse 4m42s (x11 over 4m44s) datavolume-controller pod openshift-virtualization-os-images/size-detection-ae130582-c792-4677-86dd-f78c8c243ee8 using PersistentVolumeClaim fedora-56ccabc01cbe

cdi deployment pod log:
{"level":"debug","ts":1670816776.3534229,"logger":"events","msg":"Normal","object":

{"kind":"DataVolume","namespace":"default","name":"clone4","uid":"349bdb29-09e6-4a0a-9ade-ee4ac4582ade","apiVersion":"cdi.kubevirt.io/v1beta1","resourceVersion":"10785711"}

,"reason":"SizeDetectionPodNotReady","message":"The size detection pod is not finished yet"}
{"level":"debug","ts":1670816776.3534684,"logger":"events","msg":"Warning","object":

{"kind":"DataVolume","namespace":"default","name":"clone4","uid":"349bdb29-09e6-4a0a-9ade-ee4ac4582ade","apiVersion":"cdi.kubevirt.io/v1beta1","resourceVersion":"10785711"}

,"reason":"HostAssistedCloneSourceInUse","message":"pod openshift-virtualization-os-images/size-detection-ae130582-c792-4677-86dd-f78c8c243ee8 using PersistentVolumeClaim fedora-56ccabc01cbe"}

Expected results:
Better to have a more friendly error when missing storage size in clone
such as: missing storage size in DataVolume

Additional info: