### Apache Airflow Provider(s)

cncf-kubernetes

### Versions of Apache Airflow Providers

apache-airflow-providers-cncf-kubernetes==5.2.1

### Apache Airflow version

2.5.1

### Operating System

Arch Linux

### Deployment

Other

### Deployment details

_No response_

### What happened

Not really showing a failure in operation, but the code in the [`KubernetesPodOperator._render_nested_template_fields`](https://github.com/apache/airflow/blob/d26dc223915c50ff58252a709bb7b33f5417dfce/airflow/providers/cncf/kubernetes/operators/kubernetes_pod.py#L373-L403) function could be improved.

The current code is formed by 6 conditionals checking the type of the `content` variable. Even when the 1st of the succeed, the other 5 conditionals are still checked, which is inefficient because the function could end right there, saving time and resources.


### What you think should happen instead

The conditionals flow could be fixed with a simple map, using a dictionary to immediately get the value or fallback to the default one.

### How to reproduce

There is no bug _per se_ to reproduce. It's just making the code cleaner and more efficient, avoiding to keep computing conditionals even when the condition has been resolved.

### 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)

"""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):