Mother knows best. Nika King, the actress who plays Zendaya’s mom in “Euphoria,” seemed to find the humor in her one-line appearance in the most recent episode of the show’s Season 3. The actress, 47, took to Instagram on Sunday night to claim most of her dialogue had been cut out entirely. “I just watched the episode that I’ve been promoting all week – and my mom over here is clowning me!” she told the camera while laughing. Nika King (pictured in “Euphoria” Season 3) made her first appearance of the season. HBO King (pictured in her Instagram video) later...