Christopher Vourlias The weeks leading up to a world premiere are typically a time of celebration and anticipation for the filmmakers, particularly when that premiere is taking place at the Toronto Film Festival. But for the team behind “Elesin Oba, The King’s Horseman,” which is produced by Mo Abudu’s EbonyLife Films and Netflix and will screen in the festival’s Special Presentations section, there will be a long shadow cast across the red carpet on opening night. Just weeks ahead of the film’s world premiere on Sept. 10, director Biyi Bandele died in Lagos, Nigeria. His sudden, tragic passing on the eve of what would have been his crowning achievement as a filmmaker sent shockwaves through the film community, particularly in Africa and across the diaspora.