### 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)

"""
        Asserts that a task is deferred and the KubernetesCreatePodTrigger will be fired
        when the KubernetesPodOperator is executed in deferrable mode when deferrable=True.
        """
        k = KubernetesPodOperator(
            task_id=TEST_TASK_ID,
            namespace=TEST_NAMESPACE,
            image=TEST_IMAGE,
            cmds=TEST_CMDS,
            arguments=TEST_ARGS,
            labels=TEST_LABELS,
            name=TEST_NAME,
            is_delete_operator_pod=False,
            in_cluster=True,
            get_logs=True,
            deferrable=True,
        )
        k.config_file_in_dict_representation = {"a": "b"}
        with pytest.raises(TaskDeferred) as exc:
            k.execute(create_context(k))
        assert isinstance(exc.value.trigger, KubernetesPodTrigger)
    @patch(KUB_OP_PATH.format("cleanup"))
    @patch(HOOK_CLASS)
    def test_async_create_pod_should_throw_exception(self, mocked_hook, mocked_cleanup):