### 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)

with dag_maker("test_xcomarg_property_of_mapped_operator"):
        op_a = MockOperator.partial(task_id="a").expand(arg1=["x", "y", "z"])
    dag_maker.create_dagrun()
    assert op_a.output == XComArg(op_a)
def test_set_xcomarg_dependencies_with_mapped_operator(dag_maker):
    with dag_maker("test_set_xcomargs_dependencies_with_mapped_operator"):
        op1 = MockOperator.partial(task_id="op1").expand(arg1=[1, 2, 3])
        op2 = MockOperator.partial(task_id="op2").expand(arg2=["a", "b", "c"])
        op3 = MockOperator(task_id="op3", arg1=op1.output)
        op4 = MockOperator(task_id="op4", arg1=[op1.output, op2.output])
        op5 = MockOperator(task_id="op5", arg1={"op1": op1.output, "op2": op2.output})
    assert op1 in op3.upstream_list
    assert op1 in op4.upstream_list
    assert op2 in op4.upstream_list
    assert op1 in op5.upstream_list
    assert op2 in op5.upstream_list
def test_all_xcomargs_from_mapped_tasks_are_consumable(dag_maker, session):
    class PushXcomOperator(MockOperator):