fix: ensure Celery tasks are registered at worker startup (main)#63110
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Follow-up to #63050
When the Celery worker starts, it imports
appfromcelery_executor.pybutcelery_executor_utils.pywas never imported at module level. This meansexecute_workload(andexecute_commandfor Airflow 2.x) are never registered as Celery tasks when the worker boots, causing:KeyError: 'execute_command'
KeyError: 'execute_workload'
Received unregistered task of type '...'. The message has been ignored and discarded.
Fix is a single module-level import in
celery_executor.pysocelery_executor_utilsis loaded when the worker importsappat startup, ensuring all tasks are registered immediately.Also adds a regression test to verify task registration on import.
Fixes #63043