### Body

In the Pools UI we don't show the description column though we do have it:
https://github.com/apache/airflow/blob/99eeb84c820c8a380721e5d40f5917a01616b943/airflow/models/pool.py#L56

and we have it in the API:
https://github.com/apache/airflow/pull/19841

The task:
Expose the column in the UI
![Screenshot 2023-10-04 at 17 08 05](https://github.com/apache/airflow/assets/45845474/4ed7ed5b-8d42-4a72-b271-07d07066f914)


### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
"""Mark Dag Blocked."""
        allowed_dag_ids = get_auth_manager().get_permitted_dag_ids(user=g.user)
        
        selected_dag_ids = {unquote(dag_id) for dag_id in request.form.getlist("dag_ids") if dag_id}
        if selected_dag_ids:
            filter_dag_ids = selected_dag_ids.intersection(allowed_dag_ids)
        else:
            filter_dag_ids = allowed_dag_ids
        if not filter_dag_ids:
            return flask.json.jsonify([])
        dags = session.execute(
            select(DagRun.dag_id, sqla.func.count(DagRun.id))
            .where(DagRun.state == DagRunState.RUNNING)
            .where(DagRun.dag_id.in_(filter_dag_ids))
            .group_by(DagRun.dag_id)
        )
        payload = []
        for dag_id, active_dag_runs in dags:
            max_active_runs = 0
            dag = get_airflow_app().dag_bag.get_dag(dag_id)
            if dag:
                
                max_active_runs = dag.max_active_runs
            payload.append(
                {
                    "dag_id": dag_id,
                    "active_dag_run": active_dag_runs,
                    "max_active_runs": max_active_runs,