**Apache Airflow version**:

1.10.12

**What happened**:

I created dag with dagrun_timeout=2 minutes. 

After 2 minutes dagrun is marked as failed and the next one is started, but task keeps going.

**What you expected to happen**:

Task is killed with dag run as it is done when you mark dagrun failed manually.

**How to reproduce it**:
```
dag = DAG(dag_id='platform.airflow-test',
          description='',
          schedule_interval="0 0 * * *",
          start_date=datetime(2020, 7, 1),
          max_active_runs=1,
          catchup=True,
          dagrun_timeout=timedelta(minutes=2))

run_this = BashOperator(
    task_id='run_after_loop',
    bash_command=' for((i=1;i<=600;i+=1)); do echo "Welcome $i times"; sleep 1;  done',
    dag=dag,
)
```
tests/jobs/test_scheduler_job.py
run_type=DagRunType.SCHEDULED,
            execution_date=DEFAULT_DATE,
            state=State.RUNNING,
        )
        assert dr is not None
        with create_session() as session:
            ti = dr.get_task_instances(session=session)[0]
            ti.state = state
            ti.start_date = start_date
            ti.end_date = end_date
            count = scheduler._schedule_dag_run(dr, set(), session)
            assert count == 1
            session.refresh(ti)
            assert ti.state == State.SCHEDULED
    @parameterized.expand(
        [
            [State.NONE, None, None],
            [
                State.UP_FOR_RETRY,
                timezone.utcnow() - datetime.timedelta(minutes=30),
                timezone.utcnow() - datetime.timedelta(minutes=15),
            ],
            [
                State.UP_FOR_RESCHEDULE,
                timezone.utcnow() - datetime.timedelta(minutes=30),
                timezone.utcnow() - datetime.timedelta(minutes=15),
            ],
        ]
    )
    def test_dag_file_processor_process_task_instances_with_task_concurrency(