Survivors of the 1993 World Trade Center bombing slammed mayoral candidate Zohran Mamdani for his smiley pic with a controversial imam federal prosecutors considered an “indicted co-conspirator” in the attack. Mamdani, 34, posted a photo of himself smiling 75-year-old Imam Siraj Wahhaj on Friday, calling him a “leader and pillar” of the Muslim community in…