PHILADELPHIA — Tobias Harris split two defenders while charging from one end of the court to the other, then received a Robert Covington pass and threw down the two-handed dunk. Harris’ season-high 33 points — including 24 in the first half — to go along with eight rebounds and seven assists helped the Sixers pull away from the Toronto Raptors, 121-111, Friday night at the Wells Fargo Center. Harris’ production was needed on a night when Joel Embiid was initially uncharacteristically quiet as a scorer. The Sixers center was clearly hobbled by a foot/ankle injury sustained on a backwards-somers…