Added unit tests and restructred await_xcom_sidecar_container_start method. - #42504

Added unit tests and restructred await_xcom_sidecar_container_start method.#42504

potiuk merged 2 commits into

apache:mainapache/airflow:mainfrom

harjeevanmaan:pod_managerharjeevanmaan/airflow:pod_managerCopy head branch name to clipboard