What’s the attraction of the arts/newsmagazine CBS Sunday Morning, which is celebrating 25 years on the air? “Sunday Morning” viewers, Osgood says, defy conventional wisdom. They do not watch with a clicker in their hand. They sit or lie in front of the TV for much of the show’s 90 minutes. It is the highest-rated Sunday morning program, easily outdistancing “Meet the Press” with more than 4 1/2 million viewers a week. They tune in for stories that are not told anywhere else on TV.”