By Matt Spetalnick and Laura Sanicola WASHINGTON (Reuters) -A New York Times report of a former anti-abortion leader’s claim that he was told in advance about the outcome of a major 2014 U.S. Supreme Court case involving contraceptives triggered calls on Saturday for an investigation of a court still reeling from the leak of a landmark abortion rights ruling. Rev. Rob Schenck was quoted by The Times as saying he was informed weeks before the public announcement of the 2014 ruling shortly after two conservative allies had dinner at the home of Supreme Court Justice Samuel Alito and his wife. Al…