The Mamdani administration’s pick to lead an office tasked with fighting Jewish hate couldn’t define the word “antisemitism” during a testy Wednesday City Council meeting — sparking one frustrated politician to storm out. Phylisa Wisdom, who was tapped last month for Mayor Zohran Mamdani’s Office to Combat Antisemitism, said that she could not define the term and that it would be approached with a “case-by-case” approach. “The first thing I’ll say is that across city government, there is not a definition codified for any form of hate at all,” she said during a meeting of the City Council’s Task Force…