The combination of the penultimate episode of “American Idol” and hit serial “Empire” made Fox the clear winner on Wednesday night. It led all networks among total viewers (10.52 million) and all key demos: adults 18-49 (3.2 rating/11 share), adults 18-34 (2.6/11) and adults 25-54 (4.0/12). It was the most-watched telecast for “American Idol” based […]