### Apache Airflow version

main (development)

### What happened

When creating a DAG with Task Groups and a Mapped Operator, if the Task Group is passed as argument to Mapped Operator's `partial` method it is ignored and the operator is not added to the group.

### What you think should happen instead

The Mapped Operator should be added to the Task Group passed as an argument.

### How to reproduce

Create a DAG with a source code like the following one

```python
from airflow import DAG
from airflow.operators.bash import BashOperator
from airflow.operators.empty import EmptyOperator
from airflow.utils import timezone
from airflow.utils.task_group import TaskGroup


with DAG("dag", start_date=timezone.datetime(2016, 1, 1)) as dag:
    start = EmptyOperator(task_id="start")
    finish = EmptyOperator(task_id="finish")

    group = TaskGroup("test-group")
    commands = ["echo a", "echo b", "echo c"]
    mapped = BashOperator.partial(task_id="task_2", task_group=group).expand(bash_command=commands)

    start >> group >> finish

# assert mapped.task_group == group

```

### Operating System

macOS 13.2.1 (22D68)

### Versions of Apache Airflow Providers

_No response_

### Deployment

Other

### 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)

raise AirflowException(
                f"The weight_rule must be one of "
                f"{WeightRule.all_weight_rules},'{dag.dag_id if dag else ''}.{task_id}'; "
                f"received '{weight_rule}'."
            )
        self.weight_rule = weight_rule
        self.resources = coerce_resources(resources)
        if task_concurrency and not max_active_tis_per_dag:
            
            warnings.warn(
                "The 'task_concurrency' parameter is deprecated. Please use 'max_active_tis_per_dag'.",
                RemovedInAirflow3Warning,
                stacklevel=2,
            )
            max_active_tis_per_dag = task_concurrency
        self.max_active_tis_per_dag: int | None = max_active_tis_per_dag
        self.max_active_tis_per_dagrun: int | None = max_active_tis_per_dagrun
        self.do_xcom_push = do_xcom_push
        self.doc_md = doc_md
        self.doc_json = doc_json
        self.doc_yaml = doc_yaml
        self.doc_rst = doc_rst
        self.doc = doc
        self.upstream_task_ids: set[str] = set()
        self.downstream_task_ids: set[str] = set()
        if dag:
            self.dag = dag
        self._log = logging.getLogger("airflow.task.operators")
        
        self.inlets: list = []