Abi Carter, a 21-year-old musician from Indio, California, emerged victorious as the “American Idol” season 22 champion during Sunday night’s star-studded finale. Who won American Idol?Carter won the popular vote, triumphing over fellow contestants Will Moseley, a 23-year-old musician from Hazelhurst, Georgia, and Jack Blocker, a 25-year-old graphic designer from Dallas, Texas.The three-hour finale was a…