### 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
#
#
#
import datetime
import os
import signal
import time
import urllib
from tempfile import NamedTemporaryFile
from typing import List, Optional, Union, cast
from unittest import mock
from unittest.mock import call, mock_open, patch
import pendulum
import pytest
from freezegun import freeze_time
from airflow import models, settings
from airflow.exceptions import (
    AirflowException,
    AirflowFailException,
    AirflowSensorTimeout,
    AirflowSkipException,
)
from airflow.models import (
    DAG,
    Connection,
    DagRun,
    Pool,
    RenderedTaskInstanceFields,