Importing a VM image from the internal Openshift registry fails with "unauthorized: authentication required"

Issue

• We have created a DataVolume to import a VM image from the internal Openshift image registry.
• The secret is available in the same namespace as specified by the documentation.
• The import fails with the error:

I0620 13:53:41.688336       1 transport.go:173] Downloading image from 'docker://image-registry.openshift-image-registry.svc.cluster.local:5000/library/fedora36:latest', copying file from 'disk' to '/scratch'
E0620 13:53:41.721552       1 transport.go:75] Could not create image reference: Error reading manifest latest in image-registry.openshift-image-registry.svc.cluster.local:5000/library/fedora36: unauthorized: authentication required
E0620 13:53:41.721577       1 data-processor.go:228] unauthorized: authentication required