### 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)

"""When we expect to be able to find a pod but cannot."""
class KubernetesPodOperator(BaseOperator):
    """
    Execute a task in a Kubernetes Pod
    .. seealso::
        For more information on how to use this operator, take a look at the guide:
        :ref:`howto/operator:KubernetesPodOperator`
    .. note::
        If you use `Google Kubernetes Engine <https://cloud.google.com/kubernetes-engine/>`__
        and Airflow is not running in the same cluster, consider using
        :class:`~airflow.providers.google.cloud.operators.kubernetes_engine.GKEStartPodOperator`, which
        simplifies the authorization process.
    :param kubernetes_conn_id: The :ref:`kubernetes connection id <howto/connection:kubernetes>`