Use original task's `start_date` if a task continues after deferral (#20062)
Use original task's `start_date` if a task continues after deferral (#20062)


lyft/incubator-airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,cfei18/incubator-airflow,mistercrunch/airflow,bolkedebruin/airflow,apache/airflow,danielvdende/incubator-airflow,mistercrunch/airflow,lyft/incubator-airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,bolkedebruin/airflow,mistercrunch/airflow,bolkedebruin/airflow,Acehaidrey/incubator-airflow,cfei18/incubator-airflow,lyft/incubator-airflow,Acehaidrey/incubator-airflow,cfei18/incubator-airflow,nathanielvarona/airflow,nathanielvarona/airflow,bolkedebruin/airflow,cfei18/incubator-airflow,mistercrunch/airflow,apache/airflow,Acehaidrey/incubator-airflow,apache/airflow,danielvdende/incubator-airflow,bolkedebruin/airflow,apache/airflow,apache/airflow,nathanielvarona/airflow,nathanielvarona/airflow,lyft/incubator-airflow,apache/airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow,danielvdende/incubator-airflow