ImportError: cannot import name 'SUPERVISOR_COMMS' with dag.test()

### Apache Airflow version 3.0.2 ### If "Other Airflow 2 version" selected, which one? _No response_ ### What happened? The exception occurred when the DAG ran with `dag.test()` attempted to retrieve a variable from the API server. Some similar issues have been opened (#48554, #51062, #51316). The PRs provided as a solution (#50300, #50419) were included in 3.0.2 but did not fix the problem. ``` Exception has occurred: ImportError cannot import name 'SUPERVISOR_COMMS' from 'airflow.sdk.execution_time.task_runner' (/workspaces/airflow/.venv/lib/python3.12/site-packages/airflow/sdk/execution_time/task_runner.py) File "/workspaces/airflow/test.py", line 7, in <module> x = Variable.get("my_variable") ^^^^^^^^^^^^^^^^^^^^^^^^ ImportError: cannot import name 'SUPERVISOR_COMMS' from 'airflow.sdk.execution_time.task_runner' (/workspaces/airflow/.venv/lib/python3.12/site-packages/airflow/sdk/execution_time/task_runner.py) ``` ### What you think should happen instead? The variable should have been successfully retrieved without exceptions. ### How to reproduce 1. Set the variable: `airflow variables set my_variable my_value` 2. Run DAG: ``` import logging from airflow import DAG from airflow.providers.standard.operators.empty import EmptyOperator from airflow.providers.standard.operators.python import PythonOperator from airflow.sdk import Variable x = Variable.get("my_variable") def my_function(my_var: str) -> None: logging.getLogger(__name__).info(my_var) with DAG("test_dag") as dag: start = EmptyOperator(task_id="start") py_func = PythonOperator( task_id="py_func", python_callable=my_function, op_kwargs={ "my_var": x } ) end = EmptyOperator(task_id="end") start >> py_func >> end if __name__ == "__main__": dag.test() ``` ### Operating System Debian GNU/Linux 12 (bookworm) ### Versions of Apache Airflow Providers _No response_ ### Deployment Other Docker-based deployment ### Deployment deta…