PHILADELPHIA — It felt over before it even started. Joel Embiid was booed — loudly — in his own building when he was shown on the jumbotron during warmups. The 76ers PA announcer was being drowned out by all the Knicks fans in attendance, which felt like a majority of the crowd. Before tipoff, Xfinity Mobile Arena had already become Knixfinity Arena. Then the historic party truly got started. This bludgeoning felt inevitable. Jalen Brunson celebrates after hitting a 3-pointer during the May 10 game against the 76ers. Jason Szenes for the NY Post Jose Alvarado and Josh Hart celebrate during the Knicks’ Game 4 win May 10 against the 76ers. Jason Szenes for the NY Post There was no suspense, no hint of this ever being competitive. The Knicks’ breathtaking 3-point shooting — their 25 made 3s tied the NBA record for most in a playoff game — wouldn’t allow for any of that. They put the 76ers out of their misery in emphatic fashion.…