Let the games begin. “Squid Game,” which hit Netflix last year and quickly became its most popular series, is getting the reality competition treatment — minus the life-threatening component, the streamer announced Tuesday. “Squid Game: The Challenge” — which is now casting English-language speakers from around the world — will boast “both the largest cast and lump sum cash prize in reality TV history” with 456 people competing to take home $4.56 million. “As they compete through a series of games inspired by the original show — plus surprising new additions — their strategies, alliances, and …