### 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)

env_from=self.env_from,
                        security_context=self.container_security_context,
                    )
                ],
                image_pull_secrets=self.image_pull_secrets,
                service_account_name=self.service_account_name,
                host_network=self.hostnetwork,
                security_context=self.security_context,
                dns_policy=self.dnspolicy,
                scheduler_name=self.schedulername,
                restart_policy="Never",
                priority_class_name=self.priority_class_name,
                volumes=self.volumes,
            ),
        )
        pod = PodGenerator.reconcile_pods(pod_template, pod)
        if not pod.metadata.name:
            pod.metadata.name = _create_pod_id(
                task_id=self.task_id, unique=self.random_name_suffix, max_length=80
            )
        elif self.random_name_suffix:
            
            pod.metadata.name = _add_pod_suffix(pod_name=pod.metadata.name)
        if not pod.metadata.namespace:
            
            
            hook_namespace = self.hook._get_namespace()
            pod_namespace = self.namespace or hook_namespace or self._incluster_namespace or "default"
            pod.metadata.namespace = pod_namespace
        for secret in self.secrets: