Fix quickstart notebook race in Actions build job

[Copilot]

The build job in tutorials-get-started-notebooks-quickstart failed because the notebook attempted to fetch/deploy a registered model before the training job had finished registering it. This change removes that race by making notebook execution wait for job completion.

• Root cause addressed

  • quickstart.ipynb submitted a training job and immediately queried ml_client.models.list(...), which intermittently hit ModelNotFound in CI.

• Notebook execution ordering

  • Updated the job submission cell in tutorials/get-started-notebooks/quickstart.ipynb to retain the returned job and stream it to completion before model lookup.

• Behavioral impact

  • Model listing/deployment steps now run only after the training run reaches terminal state, preventing transient CI failures in the build job.

returned_job = ml_client.create_or_update(job)
ml_client.jobs.stream(returned_job.name)