### Body

Use `AirflowProviderDeprecationWarning` as warning source in EMR operators and change stacklevel to 2:
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L380-L384
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L373-L377
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L264-L268
https://github.com/apache/airflow/blob/05036e619c0c6dafded1451daac4e07e20aee33f/airflow/providers/amazon/aws/operators/emr.py#L257-L261

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
if event is None:
            self.log.error("Trigger error: event is None")
            raise AirflowException("Trigger error: event is None")
        elif event["status"] != "success":
            raise AirflowException(f"Application {event['application_id']} failed to create")
        self.log.info("Starting application %s", event["application_id"])
        self.hook.conn.start_application(applicationId=event["application_id"])
        self.defer(
            trigger=EmrServerlessStartApplicationTrigger(
                application_id=event["application_id"],
                aws_conn_id=self.aws_conn_id,
                waiter_delay=self.waiter_delay,
                waiter_max_attempts=self.waiter_max_attempts,
            ),
            timeout=timedelta(seconds=self.waiter_max_attempts * self.waiter_delay),
            method_name="execute_complete",
        )
    def execute_complete(self, context: Context, event: dict[str, Any] | None = None) -> None:
        if event is None or event["status"] != "success":
            raise AirflowException(f"Trigger error: Application failed to start, event is {event}")
        self.log.info("Application %s started", event["application_id"])
        return event["application_id"]
class EmrServerlessStartJobOperator(BaseOperator):