### Apache Airflow version

main (development)

### What happened

It seems [this](https://github.com/apache/airflow/commit/e16207409998b38b91c1f1697557d5c229ed32d1) commit has made the task instance execution date disappear from the task instance tooltip completely:
![image](https://github.com/apache/airflow/assets/18099224/62c9fec5-9e02-4319-93b9-197d25a8b027)
Note the missing `Run: <execution date>` between Task_id and Run_id.
I think there's a problem with the task instance execution date, because it's always `undefined`. In an older version of Airflow (2.4.3), I can see that the tooltip always shows the **current** datetime instead of the actual execution date, which is what the author of the commit identified in the first place I think.

### What you think should happen instead

The tooltip should properly show the task instance's execution date, not the current datetime (or nothing). There's a deeper problem here that causes `ti.execution_date` to be `undefined`.

### How to reproduce

Run the main branch of Airflow, with a simple DAG that finishes a run successfully. Go to the Graph view of a DAG and hover over any completed task with the mouse.

### Operating System

Ubuntu 22.04

### Versions of Apache Airflow Providers

_No response_

### Deployment

Virtualenv installation

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [ ] 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)

def heartbeat(self):
        return True
@pytest.fixture()
def new_id_example_bash_operator():
    dag_id = "example_bash_operator"
    test_dag_id = "non_existent_dag"
    with create_session() as session:
        dag_query = session.query(DagModel).filter(DagModel.dag_id == dag_id)
        dag_query.first().tags = []  
    with create_session() as session:
        dag_query.update({"dag_id": test_dag_id})
    yield test_dag_id
    with create_session() as session:
        session.query(DagModel).filter(DagModel.dag_id == test_dag_id).update({"dag_id": dag_id})
def test_delete_dag_button_for_dag_on_scheduler_only(admin_client, new_id_example_bash_operator):
    
    
    
    test_dag_id = new_id_example_bash_operator
    resp = admin_client.get("/", follow_redirects=True)
    check_content_in_response(f"/delete?dag_id={test_dag_id}", resp)
    check_content_in_response(f"return confirmDeleteDag(this, '{test_dag_id}')", resp)
@pytest.fixture()
def new_dag_to_delete():