### 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.
"future this will default to None and defer to the waiter's default value."
            )
        if waiter_countdown is NOTSET:
            waiter_max_attempts = 25 if waiter_max_attempts is NOTSET else waiter_max_attempts
        else:
            if waiter_max_attempts is NOTSET:
                
                
                waiter_max_attempts = waiter_countdown // waiter_delay  
            warnings.warn(
                "The parameter waiter_countdown has been deprecated to standardize "
                "naming conventions.  Please use waiter_max_attempts instead.  In the "
                "future this will default to None and defer to the waiter's default value."
            )
        self.aws_conn_id = aws_conn_id
        self.application_id = application_id
        self.execution_role_arn = execution_role_arn
        self.job_driver = job_driver
        self.configuration_overrides = configuration_overrides
        self.wait_for_completion = wait_for_completion
        self.config = config or {}
        self.name = name or self.config.pop("name", f"emr_serverless_job_airflow_{uuid4()}")
        self.waiter_max_attempts = int(waiter_max_attempts)  
        self.waiter_delay = int(waiter_delay)  
        self.job_id: str | None = None
        self.deferrable = deferrable
        super().__init__(**kwargs)
        self.client_request_token = client_request_token or str(uuid4())
    @cached_property
    def hook(self) -> EmrServerlessHook: