### 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
ti.run()
        
        
        
        assert ti.xcom_pull(task_ids='test_xcom', key=key) is None
        
        assert ti.xcom_pull(task_ids='test_xcom', key=key, include_prior_dates=True) == value
    def test_xcom_push_flag(self, dag_maker):
        """
        Tests the option for Operators to push XComs
        """
        value = 'hello'
        task_id = 'test_no_xcom_push'
        with dag_maker(dag_id='test_xcom'):
            
            task = PythonOperator(
                task_id=task_id,
                python_callable=lambda: value,
                do_xcom_push=False,
            )
        ti = dag_maker.create_dagrun(execution_date=timezone.utcnow()).task_instances[0]
        ti.task = task
        ti.run()
        assert ti.xcom_pull(task_ids=task_id, key=models.XCOM_RETURN_KEY) is None
    def test_post_execute_hook(self, dag_maker):
        """
        Test that post_execute hook is called with the Operator's result.
        The result ('error') will cause an error to be raised and trapped.
        """
        class TestError(Exception):