MIDDLETOWN — The Middletown Cavaliers scored the game’s first eight points and never trailed, beating cross-district rival Appoqunimink in a matchup of top-10 basketball programs Thursday night. Middletown senior guard Kaleb Ra’lfa, who transferred from Appo before the start of the school year, led all scorers with 28 points, making seven shots from beyond the arc. “It was great competing …