### Apache Airflow version

2.7.0rc2

### What happened

In the Airflow UI, currently, the DAG Processor is visible in the Cluster Activity page even if there is no stand-alone dag processor. 

### What you think should happen instead

It should be hidden if there is no stand-alone dag processor.

### How to reproduce

Run Airflow 2.7 

### Operating System

Mac OS

### Versions of Apache Airflow Providers

Airflow > 2.7

### Deployment

Official Apache Airflow Helm Chart

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

"""Returns cluster activity historical metrics."""
        start_date = _safe_parse_datetime(request.args.get("start_date"))
        end_date = _safe_parse_datetime(request.args.get("end_date"))
        with create_session() as session:
            
            dag_run_types = session.execute(
                select(DagRun.run_type, func.count(DagRun.run_id))
                .where(
                    DagRun.start_date >= start_date,
                    func.coalesce(DagRun.end_date, datetime.datetime.utcnow()) <= end_date,
                )
                .group_by(DagRun.run_type)
            ).all()
            dag_run_states = session.execute(
                select(DagRun.state, func.count(DagRun.run_id))
                .where(
                    DagRun.start_date >= start_date,
                    func.coalesce(DagRun.end_date, datetime.datetime.utcnow()) <= end_date,
                )
                .group_by(DagRun.state)
            ).all()
            
            task_instance_states = session.execute(