### 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)

if not test_mode:
            session.add(Log(State.FAILED, self))
            
            session.add(TaskFail(ti=self))
        self.clear_next_method_args()
        
        if context is None and getattr(self, "task", None):
            context = self.get_template_context(session)
        if context is not None:
            context["exception"] = error
        
        
        
        
        
        
        
        
        
        task: BaseOperator | None = None
        try:
            if getattr(self, "task", None) and context:
                task = self.task.unmap((context, session))
        except Exception:
            self.log.error("Unable to unmap task to determine if we need to send an alert email")
        if force_fail or not self.is_eligible_to_retry():
            self.state = State.FAILED
            email_for_state = operator.attrgetter("email_on_failure")
            callbacks = task.on_failure_callback if task else None
            callback_type = "on_failure"