The Thelonious Monk Institute of Jazz honors its namesake by hosting its annual International Jazz Competition, which since 1987, has provided a springboard to some of the genre’s brightest young stars. Past winners include Joshua Redman, Joey DeFrancesco, Chris Potter, and Jane Monheit, making the competition the most prestigious in the world. On Friday, as part of its Discovery Artist series, the Kennedy Center hosts 2008’s winner, up-and-coming saxophonist Jon Irabagon, the first Filipino-American…