What doesn’t kill American Idol makes it stronger — or at least that’s what the show is hoping by reportedly replacing departing Katy Perry with rock royalty Jon Bon Jovi! According to a recent report, “Jon is the undisputed top contender” to take over for the pop star’s judging duties after season 22 wraps, RadarOnline.com has learned. “Jon is the undisputed top contender to succeed Katy,” a source blabbed to the National Enquirer. “A living legend with undeniable charisma, he possesses all the qualities necessary to command the stage and captivate TV audiences.” While the insider gushed over…