Philadelphia’s Mayor Cherelle Parker may have just leaked Kamala Harris’ Vice Presidential pick as Pennsylvania Governor Josh Shapiro with a mistimed Friday tweet, according to Philly Mag’s Ernest Owens. Parker tweeted out a campaign hype video for Harris and Shapiro with a caption that appears to indicate he will be her pick. “Proud to be back with so many leaders from across our region supporting Kamala Harris for President and Josh Shapiro for VP!” Parker tweeted Friday afternoon. The video concludes with a number of apparent Pennsylvanians saying “We’re getting behind Kamala Harris for Pre…