**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
dagbag = DagBag(dag_folder=ELASTIC_DAG_FILE, include_examples=False, read_dags_from_db=False)
            dagbag.sync_to_db()
            dag_ids = dagbag.dag_ids
            dagbag = DagBag(read_dags_from_db=True)
            for i, dag_id in enumerate(dag_ids):
                dag = dagbag.get_dag(dag_id)
                dr = dag.create_dagrun(
                    state=State.RUNNING,
                    run_id=f"{DagRunType.MANUAL.value}__{i}",
                    dag_hash=dagbag.dags_hash[dag.dag_id],
                )
                dagruns.append(dr)
                for ti in dr.get_task_instances():
                    ti.set_state(state=State.SCHEDULED)
            mock_agent = mock.MagicMock()
            job = SchedulerJob(subdir=PERF_DAGS_FOLDER, num_runs=1)
            job.executor = MockExecutor(do_update=False)
            job.heartbeat = mock.MagicMock()
            job.processor_agent = mock_agent
            with assert_queries_count(expected_query_count):
                with mock.patch.object(DagRun, 'next_dagruns_to_examine') as mock_dagruns:
                    mock_dagruns.return_value = dagruns
                    job._run_scheduler_loop()
    @parameterized.expand(
        [
            
            
            ([8, 8, 8, 8], 1, 1, "1d", "None", "no_structure"),  
            ([8, 8, 8, 8], 1, 1, "1d", "None", "linear"),  
            ([20, 11, 11, 11], 1, 1, "1d", "@once", "no_structure"),