Ensure that this works:

```python
@setup
def mytask():
    print("I am a setup task")

with dag_maker() as dag:
    mytask.override(task_id='newtask')

assert len(dag.task_group.children) == 1
setup_task = dag.task_group.children["newtask"]
assert setup_task._is_setup
```
and teardown also works
#
#
#
from __future__ import annotations
import pytest
from airflow.exceptions import AirflowException
from airflow.utils.setup_teardown import SetupTeardownContext
class TestSetupTearDownContext:
    def test_setup(self):
        assert SetupTeardownContext.is_setup is False
        assert SetupTeardownContext.is_teardown is False
        with SetupTeardownContext.setup():
            assert SetupTeardownContext.is_setup is True
            assert SetupTeardownContext.is_teardown is False
        assert SetupTeardownContext.is_setup is False
        assert SetupTeardownContext.is_teardown is False
    def test_teardown(self):
        assert SetupTeardownContext.is_setup is False
        assert SetupTeardownContext.is_teardown is False
        with SetupTeardownContext.setup():
            assert SetupTeardownContext.is_setup is True
            assert SetupTeardownContext.is_teardown is False
        assert SetupTeardownContext.is_setup is False
        assert SetupTeardownContext.is_teardown is False
    def test_setup_exception(self):