New York City Mayor Zohran Mamdani scored a legal victory Wednesday after a state appeals court reversed a lower court ruling that had ordered his administration to redo the rollout of a tax on high-end second homes.The four-judge panel unanimously dismissed the homeowners' lawsuit, finding that the plaintiffs lacked legal standing. The decision overturned a September ruling by a Staten Island judge who had ordered the city to restart the tax's implementation.The ruling allows Mamdani's administration to continue implementing the surcharge — also known as a pied-à-terre tax — a key part of his...