### Body

Add unit test for changes in https://github.com/apache/airflow/pull/17305

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
tests/jobs/test_backfill_job.py
"""
        Tests that the --delay argument is passed correctly to the BackfillJob
        """
        dag_id = 'example_bash_operator'
        run_date = DEFAULT_DATE
        args = [
            'dags',
            'backfill',
            dag_id,
            '-s',
            run_date.isoformat(),
            '--delay-on-limit',
            '0.5',
        ]
        parsed_args = self.parser.parse_args(args)
        assert 0.5 == parsed_args.delay_on_limit
    def _get_dag_test_max_active_limits(