After “The Exorcist: Believer” bombed, Universal Pictures went back to the drawing board and instead hired “Midnight Mass” and “Doctor Sleep” filmmaker Mike Flanagan, giving him effectively carte blanche to do what he wanted with the franchise. The result is “The Exorcist: Martyrs,” a full reboot of the franchise led by some solid names including Scarlett Johansson, John Leguizamo, Laurence Fishburne and Diane Lane along with a staple of regular…