Jude Law left an audience member in a swoon at a performance of Broadway’s “Peter and the Starcatcher.” When a woman noticed Law with his children a few aisles ahead of her during intermission Thursday night, she gasped in recognition then promptly fainted, a spy said. She was revived by an usher and stayed for the second act, which was delayed slightly by the commotion. Law apparently wasn’t aware of what happened. Also in the crowd: “Law & Order: SVU” stars Mariska Hargitay and Danny Pino with their spouses, and “Grey’s Anatomy” star Kim Raver with her two kids.