WARNING: Spoilers ahead for “Ant-Man and the Wasp: Quantumania”Phase 5 of the MCU officially begins with “Ant-Man and the Wasp: Quantumania” and that means the return of post-credits scenes. But if you’re here, you know they’ve never really left, even with the TV shows. What you want to know is how many stings to expect from this threequel.Indeed, “Ant-Man and the Wasp: Quantumania” lives up to its name, largely taking place in the Quantum Realm, after Scott Lang’s (Paul Rudd) daughter Cassie (Kathryn Newton) figures out how to send a signal down to the microscopic dimension.