‘Birds of Prey’ might have you praying for a better movie

“Harley Quinn: Birds of Prey” – Harley Quinn (Margot Robbie) is a badass broad.  Don’t take this critic’s word for it.  She gave herself that moniker in “Harley Quinn: Birds of Prey”, and why not.  She earned a PhD.  She plays roller derby.  She swings a baseball bat when trouble is afoot.  She loves greasy egg sandwiches with a hearty slice of cheese, and she’s Joker’s girlfriend. Well, she was Joker’s girlfriend.  Sometime after Harley Quinn’s previous big screen performance in the dreadful “Suicide Squad” (2016) – where she and…