NEW YORK — John Mulaney’s second trip to Broadway took little convincing. What Mulaney signed up for was “All In: Comedy About Love,” a stage adaptation of his friend Simon Rich’s short stories that’s charming Broadway audiences this winter with a starry cast. This photo provided by O+M/DKC in December 2024 shows, from left, Richard Kind, Renée Elise Goldsberry, John …