Following suit in his legendary father’s footsteps, 15-year-old Hayes Costner embarks on an acting career in Hollywood with a riveting performance in his dad’s movie. The young Costner heralds a new era in the family’s cinematic legacy. In a move that echoes the charisma and talent of his famous dad, Kevin Costner’s youngest son, Hayes Logan Costner, is making waves with his acting debut in the much-anticipated movie “Horizon: An American Saga.” At the tender age of 15, Hayes steps into the limelight, showcasing his acting prowess in a gripping scene alongside Sienna Miller, who plays his moth…