‘Being the Ricardos’ is an overstuffed and unfocused look at Lucille Ball and Desi Arnaz

Being the Ricardos wants to be a lot of things. The newest film from writer-director Aaron Sorkin (The Trial of the Chicago 7) plays out over a highly eventful week during the production of I Love Lucy in 1953, the events of which would need far more than a single episode to convey. It tries …