Preflight validation warnings when working with UDPs

[soxofaan]

I was playing with UDP example notebook https://documentation.dataspace.copernicus.eu/notebook-samples/openeo/UDP.html
and noticed that some preflight validation warnings popped up:

[Pratichhya]

Noticed this issue again, when the test started failing when updating the JupyterLab environment in CDSE: https://github.com/eu-cdse/notebook-samples/actions/runs/11138803498/job/30954386763