### 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 = create_task_instance(
            dag_id='test_pendulum_template_dates',
            task_id='test_pendulum_template_dates_task',
            schedule_interval='0 12 * * *',
        )
        template_context = ti.get_template_context()
        assert isinstance(template_context["data_interval_start"], pendulum.DateTime)
        assert isinstance(template_context["data_interval_end"], pendulum.DateTime)
    @pytest.mark.parametrize(
        "content, expected_output",
        [
            ('{{ conn.get("a_connection").host }}', 'hostvalue'),
            ('{{ conn.get("a_connection", "unused_fallback").host }}', 'hostvalue'),
            ('{{ conn.get("missing_connection", {"host": "fallback_host"}).host }}', 'fallback_host'),
            ('{{ conn.a_connection.host }}', 'hostvalue'),
            ('{{ conn.a_connection.login }}', 'loginvalue'),
            ('{{ conn.a_connection.password }}', 'passwordvalue'),
            ('{{ conn.a_connection.extra_dejson["extra__asana__workspace"] }}', 'extra1'),
            ('{{ conn.a_connection.extra_dejson.extra__asana__workspace }}', 'extra1'),
        ],
    )
    def test_template_with_connection(self, content, expected_output, create_task_instance):
        """
        Test the availability of variables in templates
        """
        with create_session() as session: