### Body

Use stacklevel 2 instead of the default 1:
https://github.com/apache/airflow/blob/b5057e0e1fc6b7a47e38037a97cac862706747f0/airflow/providers/cncf/kubernetes/utils/pod_manager.py#L361-L365

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
"""Retrieves XCom value and also checks if xcom json is valid."""
        with closing(
            kubernetes_stream(
                self._client.connect_get_namespaced_pod_exec,
                pod.metadata.name,
                pod.metadata.namespace,
                container=PodDefaults.SIDECAR_CONTAINER_NAME,
                command=["/bin/sh"],
                stdin=True,
                stdout=True,
                stderr=True,
                tty=False,
                _preload_content=False,
            )
        ) as resp:
            result = self._exec_pod_command(
                resp,
                f"if [ -s {PodDefaults.XCOM_MOUNT_PATH}/return.json ]; then cat {PodDefaults.XCOM_MOUNT_PATH}/return.json; else echo __airflow_xcom_result_empty__; fi",  
            )