Since making his MonsterVerse debut in 2017’s “Kong: Skull Island,” the title character has battled a sneaky squid, deadly lizard-like predators, the mighty Godzilla and even a high-tech mecha designed to take all these creatures out. But in “Godzilla x Kong: The New Empire,” the giant ape must face his most challenging foe yet: a toothache. “These movies are always about taking things that are relatable and then scaling them up,” says director Adam Wingard, 41. “You’re looking for those things [that] would be fun to see on this wildly big scale that we’ve never seen” — like Kong scratching hi…