Impossible to set image-registry and image-name in kn workflow build

Due to KOGITO-7666, it's impossible to set just the registry and the image name. The CLI keeps complaining about the image name.

If you do:

kn workflow build --image-registry dev.local --image-name my-first-osl:latest

The output is:

ERROR: either --image or --image-name should be used
Error: initializing build config: missing flags
Usage:
  kn-workflow build [flags]

Which is misaligned with the actual input since image-name has been given.