Former New York City Mayor Eric Adams said his socialist successor, Zohran Mamdani, is getting a reality check on the “idealistic” approach he fiercely championed after two months in charge of the Big Apple. Mamdani got the wake-up call, Adams charged, after facing criticism for flipping on his pledge to end mayor control of schools — a system he strongly opposed on the campaign trail — and letting at least 20 homeless people freeze to death during a recent cold snap. “He’s seeing the reality