### Apache Airflow version

2.5.2

### What happened

Not sure if this is a feature not a bug, but I can use KubernetesPodOperator fine without setting a kubernetes_conn_id.
For example:
```
start = KubernetesPodOperator(
        namespace="mynamespace",
        cluster_context="mycontext",
        security_context={ 'runAsUser': 1000 },
        name="hello",
        image="busybox",
        image_pull_secrets=[k8s.V1LocalObjectReference('prodregistry')],
        cmds=["sh", "-cx"],
        arguments=["echo Start"],
        task_id="Start",
        in_cluster=False,
        is_delete_operator_pod=True,
        config_file="/home/airflow/.kube/config",
    )
```

But if I add deferrable=True to this it won't work. It seems to require an explicit kubernetes_conn_id (which we don't configure).

Is not possible to the deferrable version to work as the non deferrable one?

### What you think should happen instead

I hoped that kpo deferrable would work the same as non deferrable.

### How to reproduce

Use KPO with deferrable=True but no kubernetes_conn_id setting

### Operating System

Debian 11

### Versions of Apache Airflow Providers

_No response_

### Deployment

Official Apache Airflow Helm Chart

### 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)

"""Ensure that kube_client.get_kube_client is removed from pod manager in provider 6.0."""
        kube_client_path = "airflow.providers.cncf.kubernetes.utils.pod_manager.get_kube_client"
        if not object_exists(kube_client_path):
            raise Exception(
                "You must remove this test. It only exists to remind us to remove `get_kube_client`."
            )
        if get_provider_version("apache-airflow-providers-cncf-kubernetes") >= (6, 0):
            raise Exception(
                "You must now remove `get_kube_client` from PodManager "
                "and make kube_client a required argument."
            )
    @pytest.mark.parametrize(
        "container_state, expected_is_terminated",
        [("waiting", False), ("running", False), ("terminated", True)],
    )
    def test_container_is_terminated_with_waiting_state(self, container_state, expected_is_terminated):
        container_status = MagicMock()
        container_status.configure_mock(
            **{
                "name": "base",
                "state.waiting": True if container_state == "waiting" else None,
                "state.running": True if container_state == "running" else None,
                "state.terminated": True if container_state == "terminated" else None,
            }
        )
        pod_info = MagicMock()
        pod_info.status.container_statuses = [container_status]
        assert container_is_terminated(pod_info, "base") == expected_is_terminated
def params_for_test_container_is_running():