### 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)

sorting_direction=sorting_direction,
    )
    page_link = void_link if current_page >= num_of_pages - 1 else f"?{qs}"
    output.append(next_node.format(href_link=page_link, disabled=is_disabled))
    qs = get_params(
        page=last_page,
        search=search,
        status=status,
        tags=tags,
        sorting_key=sorting_key,
        sorting_direction=sorting_direction,
    )
    last_node_link = void_link if is_disabled else f"?{qs}"
    output.append(
        last_node.format(
            href_link=last_node_link,
            disabled=is_disabled,
        )
    )
    output.append(Markup("</ul>"))
    return Markup("\n".join(output))
def epoch(dttm):
    """Returns an epoch-type date (tuple with no timezone)."""
    return (int(time.mktime(dttm.timetuple())) * 1000,)
def make_cache_key(*args, **kwargs):
    """Used by cache to get a unique key per URL."""
    path = request.path
    args = str(hash(frozenset(request.args.items())))
    return (path + args).encode("ascii", "ignore")
def task_instance_link(attr):