Now steaming on Netflix, the super-ripe Tyler Perry legal thriller “Mea Culpa” has zero hold on reality-based behavior. But life is short. Why demand something so dull of something like this? No need pleading guilty-pleasure when the movie itself pleads no contest within minutes of introducing Chicago’s most ethically fluid defense attorney, played by Kelly Rowland. Attorney Mea Harper takes the case of accused murderer Zyair Malloy (Trevante Rhodes), very big in the art world and living in a very big loft to prove it. His high-ceiling workplace, also his sexplace, is accessed by a freight ele…