By Tom Deignan If Hightstown High School in Mercer County held a 40th anniversary reunion this month, Class of ‘82 grad Doug Mastriano would be the talk of the gymnasium, since he may be the next governor of New Jersey’s neighbor to the west. Not that such attention is always positive. After the New Brunswick-born Republican’s primary win in Pennsylvania last month, The Guardian noted, “He and his wife watched as a rioter stormed a police barricade… (and) the House select committee has subpoenaed him.” The Guardian added, “Mastriano truly believes the MAGA message. … he championed Christian Na…