### What do you see as an issue?

The [/dags/{dag_id}/details](https://airflow.apache.org/docs/apache-airflow/stable/stable-rest-api-ref.html#operation/post_set_task_instances_state) endpoint of the REST API does not return all of the keys that are listed in the documentation. If I run `curl -X GET localhost:8080/api/v1/dags/{my_dag}/details`, then compare the results with the results in the documentation, you can see the following missing keys:

```python
>>> for key in docs.keys():
...     if not key in actual.keys():
...             print(key)
...
root_dag_id
last_parsed_time
last_pickled
last_expired
scheduler_lock
timetable_description
has_task_concurrency_limits
has_import_errors
next_dagrun
next_dagrun_data_interval_start
next_dagrun_data_interval_end
next_dagrun_create_after
template_search_path
```

### Solving the problem

Either remove these keys from the documentation or fix the API endpoint

### Anything else

_No response_

### Are you willing to submit PR?

- [ ] 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)

serialized_dag = DAGSchema().dump(dag_model)
    assert {
        "dag_id": "test_dag_id",
        "description": "The description",
        "fileloc": "/root/airflow/dags/my_dag.py",
        "file_token": url_safe_serializer.dumps("/root/airflow/dags/my_dag.py"),
        "is_paused": True,
        "is_active": True,
        "is_subdag": False,
        "owners": ["airflow1", "airflow2"],
        "root_dag_id": "test_root_dag_id",
        "schedule_interval": {"__type": "CronExpression", "value": "5 4 * * *"},
        "tags": [{"name": "tag-1"}, {"name": "tag-2"}],
        "next_dagrun": None,
        "has_task_concurrency_limits": True,
        "next_dagrun_data_interval_start": None,
        "next_dagrun_data_interval_end": None,
        "max_active_runs": 16,
        "next_dagrun_create_after": None,
        "last_expired": None,
        "max_active_tasks": 16,
        "last_pickled": None,
        "default_view": None,
        "last_parsed_time": None,
        "scheduler_lock": None,
        "timetable_description": None,
        "has_import_errors": None,
        "pickle_id": None,
    } == serialized_dag
def test_serialize_test_dag_collection_schema(url_safe_serializer):