ST. LOUIS — The recipe for the last week of Blues hockey is apparent. Rely on goaltending and special teams to gather points. The Blues again fell back on the same plan Monday night, but it wasn’t enough during a 4-2 loss to the Flyers. Joel Hofer made 38 saves to keep the Blues in the game, and the power play scored for the third straight game. But Philadelphia’s Owen Tippett scored the game-winning goal with 5:33 remaining in the third period, breaking through the Blues defense and flipping a backhand over Hofer. It was Tippett’s 10th shot on goal of the game. Oskar Sundqvist (power play) an…