Zo’s fanboying Fiorello. Hizzoner Zohran Mamdani keeps evoking the legacy of his predecessor Fiorello La Guardia , who guided the city through the Great Depression and is widely considered the greatest mayor in the city’s history. Mamdani’s latest gushing portrayal of the long-dead former mayor as a role model came as he sat for an extended WNYC interview last week titled “Lessons from La Guardia ” that marked his first 100 days in office. La Guardia’s vision not only matched the vast crisis