When the closer gives up the ninth-inning homer, that’s the moment everyone remembers. It’s the clip that travels. And to be clear, Andres Muñoz has to own the pitch. He fell behind Matt Olson. He let one of the hottest power hitters in baseball get into a count where he could hunt something. Then Olson did what hitters like Olson do when they are given even a little bit of room. He took a slider on the outer half and sent it 110.5 mph and 412 feet the other way, into a part of T-Mobile Park where left-handed hitters do not casually visit.  So we can’t pretend Muñoz had nothing to do with the Mariners’ 3-2 loss to Atlanta. He has to be better there. And he has to dictate the at-bat before Olson gets comfortable enough to remind everyone why the Braves’ lineup always feels one swing away from ruining your night. But this also cannot become another one of those overly simple closer panic conversations, because that would miss the more frustrating truth.…