Spoilers for Avengers: Endgame follow below. The mega-hit Avengers: Endgame is a film full of cheer-out-loud moments for audiences, but one of the biggest crowd responses comes during the climactic battle, in a moment of payoff that’s been building for years. When Thor (Chris Hemsworth) is on the ropes and about to be pummeled by Thanos (Josh Brolin), his hammer Mjolnir comes whooshing by. But it doesn’t fly into Thor’s hands. Instead, it flies into Captain America’s (Chris Evans). And the crowd. goes. wild. Thor’s magic hammer Mjolnir only comes to those …