Before Timothée Chalamet set foot on Arrakis, before Pedro Pascal started battling post-apocalyptic fungi, before Bradley Cooper, Viola Davis and Samuel L. Jackson became Bradley Cooper, Viola Davis and Samuel L. Jackson, they all underwent the same New York actor initiation: showing up on Law & Order to get murdered, accused of murder, arrested, raped, stabbed, stalked, strangled or — in John Stamos’ case — commit condom-related crimes too weird to get into here. Since the franchise began shooting on the streets of New York in 1990, it has become more than a rite of passage for hungry young actors — it’s become the East Coast’s most reliable incubator of future stars. Michael B. Jordan, Kerry Washington, Claire Danes, Idris Elba, J.K. Simmons and Allison Janney, among scads of others, all got their start by getting interrogated by Jerry Orbach or Mariska Hargitay. Of course, it wasn’t only unknowns who landed on the procedural as perps, victims and corpses.…