Mayor Zohran Mamdani’s wife was deeply involved in a democratic socialist activist campaign pushing political candidates critical of Israel and backing a controversial bill targeting pro-Israel charities, The Post has learned. First lady Rama Duwaji, who Mamdani has bizarrely claimed isn’t a public figure, created artwork for the New York City chapter of the Democratic Socialists of America as the lefty group unleashed a public campaign called “PalestineOnTheBallot.com.” The effort promoted candidates running in Democratic Party primaries who snubbed funding from the American Israel Public Affairs Committee and vowed to support the Not on Our Dime Act — a bill...