To say Holy Name Medical Center in Teaneck learned several painful lessons from the COVID-19 pandemic could be an understatement. The 361-bed hospital, less than nine miles out of New York City, was widely considered ground zero for the first of the outbreaks across New Jersey in March. But Mike Maron, Holy Name’s chief executive officer, said he thinks that experience gives the hospital a unique edge: the staff bore some of the worst of the first wave and survived.