### 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)

"duration": None,
            "end_date": None,
            "executor_config": {},
            "external_executor_id": None,
            "hostname": "",
            "job_id": None,
            "map_index": -1,
            "max_tries": 0,
            "next_kwargs": None,
            "next_method": None,
            "operator": "BashOperator",
            "pid": None,
            "pool": "default_pool",
            "pool_slots": 1,
            "priority_weight": 2,
            "queue": "default",
            "queued_by_job_id": None,
            "queued_dttm": None,
            "run_id": "TEST_DAGRUN",
            "start_date": None,
            "state": None,
            "task_id": "this_will_skip",
            "trigger_id": None,
            "trigger_timeout": None,
            "try_number": 1,
            "unixname": getuser(),
            "updated_at": DEFAULT_DATE.isoformat(),
        },
    }