Printing Downloading many times in console log when executing workflows using kn workflow plugin

[LuboTerifaj]

When you try to execute the workflow using kn workflow run command, you get the following console output:

$ kn workflow run
✅ Checking if Docker is available...
 - Docker is running
⏳ Starting your SonataFlow project in dev mode...
🔎 Warming up SonataFlow containers (quay.io/kiegroup/kogito-swf-devmode:1.42), this could take some time...
Pulling from kiegroup/kogito-swf-devmode
Pulling fs layer
Downloading
Downloading
Downloading
Downloading
Downloading
Downloading
Downloading

... printing 'Downloading' hundreds of times. At some point (after a quite long time) it eventually finishes downloading the docker image and everything works, but this behaviour is very misleading.

Originally reported by @mariofusco

[ederign]

It's already fixed here: #2136