Jonathan Larson never really belonged to the world. The composer, lyricist, and librettist, who died in 1996 after suffering an aortic aneurysm at age 35 — less than 24 hours before his most famous musical, “Rent,” staged its first preview performance off-Broadway — found posthumous stardom of a sort, and more than once. “Rent” became a national sensation after opening on Broadway just months after his death, capturing four Tony Awards, including best musical, book, and score.