### 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
run_date,
            expected_start_date,
            expected_end_date,
            expected_duration,
            expected_state,
            expected_try_number,
            expected_task_reschedule_count,
        ):
            with freeze_time(run_date):
                try:
                    ti.run()
                except AirflowException:
                    if not fail:
                        raise
            ti.refresh_from_db()
            assert ti.state == expected_state
            assert ti._try_number == expected_try_number
            assert ti.try_number == expected_try_number + 1
            assert ti.start_date == expected_start_date
            assert ti.end_date == expected_end_date
            assert ti.duration == expected_duration
            trs = TaskReschedule.find_for_task_instance(ti)
            assert len(trs) == expected_task_reschedule_count
        date1 = timezone.utcnow()
        date2 = date1 + datetime.timedelta(minutes=1)
        date3 = date2 + datetime.timedelta(minutes=1)
        date4 = date3 + datetime.timedelta(minutes=1)