[batch] leave job name empty if None (#8678)
[batch] leave job name empty if None (#8678)


hail-is/hail,danking/hail,hail-is/hail,cseed/hail,cseed/hail,danking/hail,hail-is/hail,danking/hail,hail-is/hail,cseed/hail,hail-is/hail,hail-is/hail,hail-is/hail,cseed/hail,cseed/hail,danking/hail,cseed/hail,cseed/hail,danking/hail,danking/hail,danking/hail,danking/hail,hail-is/hail,cseed/hail