Estelle Harris, who hollered her way into TV history as George Costanza’s short-fused mother on “Seinfeld” and voiced Mrs. Potato Head in the “Toy Story” franchise, has died. She was 93. As middle-class matron Estelle Costanza, Harris put a memorable stamp on her recurring role in the smash 1990s sitcom. With her high-pitched voice and humorously overbearing attitude, she was an archetype of maternal indignation. Trading insults and absurdities with her on-screen husband, played by Jerry Stiller, Harris helped create a parental pair that would leave even a psychiatrist helpless to do anything but hope they’d move to Florida —...