**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
try:
                ti.run(ignore_ti_state=ignore_ti_state)
            except AirflowException:
                pass
        assert ti.try_number == 1
        
        
        
        
        
        run_with_error(ti, ignore_ti_state=True)
        assert ti.state == State.UP_FOR_RETRY
        assert ti.try_number == 2
        with create_session() as session:
            ti.refresh_from_db(lock_for_update=True, session=session)
            ti.state = State.SCHEDULED
            session.merge(ti)
        
        executor.do_update = True
        do_schedule()  
        ti.refresh_from_db()
        assert ti.state == State.SUCCESS
    @pytest.mark.quarantined
    def test_retry_handling_job(self):