Replace pod_manager.read_pod_logs with client.read_namespaced_pod_log in KubernetesPodOperator._write_logs

[Lee-W]

Bring back the changes in https://github.com/apache/airflow/pull/36228 and improve the type annotation.

As mentioned in https://github.com/apache/airflow/pull/36228, we don't really need to call pod_manager.read_pod_logs and could call client.read_namespaced_pod_log directly instead

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[Lee-W]

I'll hold this for some time. I will prepare it for review when I finish all the implementations.