Painted cockroaches, little-kid beauty pageants, and gummy bear-and-bleach explosives: These are the hillbilly trappings of Steven Soderbergh’s “Logan Lucky,” the director’s return to the big screen in a loopy cross between his “Ocean’s” series and the lighter side of the Coen brothers’ work. It’s a lark, if you can tolerate the hammy redneck accents, and...