### 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)

"""Actions that must be done after operator finishes logic of the deferrable_execution."""
        self.cleanup(
            pod=pod,
            remote_pod=remote_pod,
        )
    def cleanup(self, pod: k8s.V1Pod, remote_pod: k8s.V1Pod):
        pod_phase = remote_pod.status.phase if hasattr(remote_pod, "status") else None
        if pod_phase != PodPhase.SUCCEEDED or not self.is_delete_operator_pod:
            self.patch_already_checked(remote_pod, reraise=False)
        if pod_phase != PodPhase.SUCCEEDED:
            if self.log_events_on_failure:
                self._read_pod_events(pod, reraise=False)
            self.process_pod_deletion(remote_pod, reraise=False)
            error_message = get_container_termination_message(remote_pod, self.base_container_name)
            error_message = "\n" + error_message if error_message else ""
            raise AirflowException(
                f"Pod {pod and pod.metadata.name} returned a failure:\n{error_message}\n"
                f"remote_pod: {remote_pod}"
            )
        else:
            self.process_pod_deletion(remote_pod, reraise=False)
    def _read_pod_events(self, pod, *, reraise=True):