PHILADELPHIA — Pennsylvania State Troopers on Tuesday announced the arrest of the 21-year-old driver who authorities say fatally struck and killed two state troopers and a civilian on I-95 early Monday. State police have charged Jayana Tanae Webb, of Eagleville, with three counts of third-degree murder, homicide by vehicle, and a battery of DUI-related charges for her role in the three deaths, state police said. The crash happened after Troopers Martin F. Mack III and Branden Sisca were dispatched to assist a man walking on the highway near Lincoln Financial Field around 12:45 a.m. Monday, off…