### Description

expanding tasks in batches to allow mapped tasks spawn more than 1024 processes.

### Use case/motivation

Maximum length of a list is limited to 1024 by `max_map_length (AIRFLOW__CORE__MAX_MAP_LENGTH)`.
during scheduling of the new tasks, an UPDATE query is ran that tries to set all the new tasks at once.  Increasing `max_map_length` more than 4K makes airflow scheduler completely unresponsive.

Also, Postgres throws `stack depth limit exceeded` error which can be fixed by updating to a newer version and setting `max_stack_depth` higher. But it doesn't really matter because airflow scheduler freezes up.
 
As a workaround, I split the dag runs into subdag runs which works but it would be much nicer if we didn't have to worry about exceeding  `max_map_length`. 

### Related issues

It was discussed here:
[Increasing 'max_map_length' leads to SQL 'max_stack_depth' error with 5000 dags to be spawned #28478](https://github.com/apache/airflow/discussions/28478)

### Are you willing to submit a PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

"""Log URL for TaskInstance"""
        iso = quote(self.execution_date.isoformat())
        base_url = conf.get_mandatory_value("webserver", "BASE_URL")
        return (
            f"{base_url}/log"
            f"?execution_date={iso}"
            f"&task_id={self.task_id}"
            f"&dag_id={self.dag_id}"
            f"&map_index={self.map_index}"
        )
    @property
    def mark_success_url(self) -> str:
        """URL to mark TI success"""
        base_url = conf.get_mandatory_value("webserver", "BASE_URL")
        return (
            f"{base_url}/confirm"
            f"?task_id={self.task_id}"
            f"&dag_id={self.dag_id}"
            f"&dag_run_id={quote(self.run_id)}"
            "&upstream=false"
            "&downstream=false"
            "&state=success"
        )
    @provide_session
    def current_state(self, session: Session = NEW_SESSION) -> str: