### Apache Airflow version

Other Airflow 2 version (please specify below)

### What happened

Greetings!
Recently I’ve faced a problem. It seems that assigning object, which can’t be serialized to JSON, to the dag_run.conf dict cause critical errors with UI.
After executing code example in "How to reproduce": 
Grid representation of the DAG breaks with following result:
<img width="800" alt="Pasted Graphic" src="https://github.com/apache/airflow/assets/79107237/872ccde5-500f-4484-a36c-dce6b7112286">
Browse -> DAG Runs also becomes unavailable.
<img width="800" alt="Pasted Graphic 1" src="https://github.com/apache/airflow/assets/79107237/b4e3df0c-5324-41dd-96f3-032e706ab7a9">
Dag itself continues to work correctly, this affects only UI graph and dagrun/list/
I suggest to use custom dictionary with restriction on setting non json values.

### What you think should happen instead

Raise an error

### How to reproduce

Execute following task. 
Composer 2 version 2.4.2
Airflow version 2.5.3
```
@task 
def test_task(**context):
    context['dag_run'].conf["test"] = np.int64(1234)
```

### Operating System

Ubuntu 20.04.6 LTS

### Versions of Apache Airflow Providers

_No response_

### Deployment

Google Cloud Composer

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [X] 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)

self,
        tasks: Iterable[Operator],
        task_creator: TaskCreator,
        *,
        session: Session,
    ) -> CreatedTasks:
        """
        Create missing tasks -- and expand any MappedOperator that _only_ have literals as input.
        :param tasks: Tasks to create jobs for in the DAG run
        :param task_creator: Function to create task instances
        """
        map_indexes: Iterable[int]
        for task in tasks:
            try:
                count = task.get_mapped_ti_count(self.run_id, session=session)
            except (NotMapped, NotFullyPopulated):
                map_indexes = (-1,)
            else:
                if count:
                    map_indexes = range(count)
                else:
                    
                    
                    map_indexes = (-1,)
            yield from task_creator(task, map_indexes)
    def _create_task_instances(