### 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)

task_instance_to_delete = create_task_instance(
        task_id="test_task_instance_delete_permission_denied",
        execution_date=timezone.utcnow(),
        state=State.DEFERRED,
        session=session,
    )
    session.commit()
    composite_key = _get_appbuilder_pk_string(TaskInstanceModelView, task_instance_to_delete)
    task_id = task_instance_to_delete.task_id
    assert session.query(TaskInstance).filter(TaskInstance.task_id == task_id).count() == 1
    resp = client_ti_without_dag_edit.post(f"/taskinstance/delete/{composite_key}", follow_redirects=True)
    check_content_in_response(f"Access denied for dag_id {task_instance_to_delete.dag_id}", resp)
    assert session.query(TaskInstance).filter(TaskInstance.task_id == task_id).count() == 1
@pytest.mark.parametrize(
    "client_fixture, should_succeed",
    [
        ("admin_client", True),
        ("user_client", True),
        ("viewer_client", False),
        ("anonymous_client", False),
    ],
)
def test_task_instance_clear(session, request, client_fixture, should_succeed):