### Apache Airflow version

main (development)

### Operating System

macOS 11.5.2

### Versions of Apache Airflow Providers

_No response_

### Deployment

Virtualenv installation

### Deployment details

_No response_

### What happened

If your first try fails and you have retries enabled, the subsequent tries skip right to the final `next_method(**next_kwargs)` instead of starting with `execute` again.

### What you expected to happen

Like we reset things like start date, we should wipe `next_method` and `next_kwargs` so we can retry the task from the beginning.

### How to reproduce

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [X] 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)

tests/models/test_taskinstance.py
self, downstream_ti_state, expected_are_dependents_done, create_task_instance, session=None
    ):
        ti = create_task_instance(session=session)
        dag = ti.task.dag
        downstream_task = DummyOperator(task_id='downstream_task', dag=dag)
        ti.task >> downstream_task
        downstream_ti = TI(downstream_task, run_id=ti.run_id)
        downstream_ti.set_state(downstream_ti_state, session)
        session.flush()
        assert ti.are_dependents_done(session) == expected_are_dependents_done
    def test_xcom_pull(self, create_task_instance):