FOR Raden Ayu Ardhia Pramesti Regita Cahyani, life is running too fast. Five years ago, other than family and close relatives, who had ever heard of this woman born April 2, 1975 in Jakarta? But since her marriage in April 1997 to Tommy Suharto, pictures of her began to appear in the media. Tata, as she's fondly called, is not without attraction. She's beautiful, aristocratic-looking, and educated. One hairdresser describes her as "a very charming l