### 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)

"md": wrapped_markdown,
        "mysql": lambda x: render(x, lexers.MySqlLexer),
        "postgresql": lambda x: render(x, lexers.PostgresLexer),
        "powershell": lambda x: render(x, lexers.PowerShellLexer),
        "py": lambda x: render(x, lexers.PythonLexer, get_python_source),
        "python_callable": lambda x: render(x, lexers.PythonLexer, get_python_source),
        "rst": lambda x: render(x, lexers.RstLexer),
        "sql": lambda x: render(x, lexers.SqlLexer),
        "tsql": lambda x: render(x, lexers.TransactSqlLexer),
        "yaml": lambda x: render(x, lexers.YamlLexer),
    }
def get_chart_height(dag):
    """
    We use the number of tasks in the DAG as a heuristic to
    approximate the size of generated chart (otherwise the charts are tiny and unreadable
    when DAGs have a large number of tasks). Ideally nvd3 should allow for dynamic-height
    charts, that is charts that take up space based on the size of the components within.
    TODO(aoen): See [AIRFLOW-1263].
    """
    return 600 + len(dag.tasks) * 10
class UtcAwareFilterMixin:
    """Mixin for filter for UTC time."""
    def apply(self, query, value):
        """Apply the filter."""
        if isinstance(value, str) and not value.strip():
            value = None
        else:
            value = timezone.parse(value, timezone=timezone.utc)
        return super().apply(query, value)
class FilterIsNull(BaseFilter):