OPINION: The definition of insanity, attributed apocryphally to Albert Einstein, is to do the same thing over and over again and yet expect different results. That’s the conundrum facing California voters ahead of the so-called jungle primary next month for governor of the Golden State. On June 2, the top two vote-getters among the eight candidates — six Democrats and two Republicans — will advance to the general election in November to succeed term-limited Gov. Gavin Newsom, a Democrat. If