**Apache Airflow version**:

2.0.1

**What happened**:

When clearing task across dags using `ExternalTaskMarker` the dag state of the external `DagRun` is not set to active. So cleared tasks in the external dag will not automatically start if the `DagRun` is a Failed or Succeeded state.

**What you expected to happen**:

The external `DagRun` run should also be set to Running state.

**How to reproduce it**:

Clear tasks in an external dag using an ExternalTaskMarker.


**Anything else we need to know**:

Looking at the code is has:

https://github.com/apache/airflow/blob/b23fc137812f5eabf7834e07e032915e2a504c17/airflow/models/dag.py#L1323-L1335

It seems like it intentionally calls the dag member method `set_dag_run_state` instead of letting the helper function `clear_task_insntances` set the `DagRun` state. But the member method will only change the state of `DagRun`s of dag where the original task is, while I believe `clear_task_instances` would correctly change the state of all involved `DagRun`s.

airflow/api_connexion/endpoints/task_instance_endpoint.py
if values is not None:
        query = query.filter(key.in_(values))
    return query
def _apply_range_filter(query, key, value_range: Tuple[Any, Any]):
    gte_value, lte_value = value_range
    if gte_value is not None:
        query = query.filter(key >= gte_value)
    if lte_value is not None:
        query = query.filter(key <= lte_value)
    return query
@format_parameters(
    {
        "execution_date_gte": format_datetime,
        "execution_date_lte": format_datetime,
        "start_date_gte": format_datetime,
        "start_date_lte": format_datetime,
        "end_date_gte": format_datetime,
        "end_date_lte": format_datetime,
    }
)
@security.requires_access(
    [
        (permissions.ACTION_CAN_READ, permissions.RESOURCE_DAG),
        (permissions.ACTION_CAN_READ, permissions.RESOURCE_DAG_RUN),
        (permissions.ACTION_CAN_READ, permissions.RESOURCE_TASK_INSTANCE),
    ]
)
@provide_session
def get_task_instances(