One of the NFL’s best feel-good stories during the holiday season. The Cincinnati Bengals have signed wide receiver Trenton Irwin off the team’s practice squad to the 53-man roster and waived offensive tackle Isaiah Prince, the team announced Tuesday. Irwin, a third-year player out of Stanford, originally signed with the Bengals as a free agent in 2019. He has been elevated from the practice squad to the active roster for each of the past three games. He has six receptions for 83 yards on the season, including three catches for 42 yards and his first career touchdown on Sunday in…