With Ime Udoka suspended for the 2022-23 season for violations of team policies and former top assistant Will Hardy now the head coach of the Utah Jazz, the Celtics’ coaching staff isn’t just short-handed, but they’re reshuffling without their two highest-ranked coaches from last season’s Finals run. As Joe Mazzulla makes the leap from sitting behind Boston’s bench during the 2021-22 campaign to taking on the role of head coach, it’s in the team’s best interest to strengthen the coaching staff. Regarding that prospect, at media day on Monday, Mazzulla said he and Brad Stevens are working together to decide…