Gov. Phil Murphy intends to name his former chief of staff George Helmy to fill U.S. Sen. Robert Menendez’s seat as the election for a permanent replacement plays out. A source familiar with the talks confirmed to NJ Advance Media Wednesday night that Helmy is expected to be offered the temporary job. The news was first reported by The New Jersey Globe, which said the expected job offer would come Thursday and the appointment would be announced Friday. Helmy, 44, is a veteran political operative, Murphy’s former chief of staff and a political adviser. He is a friend and longtime ally of the De…