Who says to beware the Ides of March? The upside of a prolonged Oscar race has meant some unexpected late drama. For months, Paul Thomas Anderson’s “One Battle After Another” sailed through awards season, picking up prize after prize. But the wins for “Sinners” and Michael B. Jordan at Sunday’s Actor Awards have given the Oscar race what Smoke or Stack might call fresh blood. An Academy Awards that had looked like a runaway might be a close call, after all.