He just can’t help himself. Mayor Zohran Mamdani’s doomsday fearmongering over the Big Apple’s budget to push his socialist tax-the-rich dream has even some Democratic City Council members fuming — the fledgling administration’s latest misstep after bungling the response to Winter Storm Fern . The befuddlement was shared by Albany lawmakers, who bristled over Mamdani’s testimony Wednesday calling for a tax hike and assertions that New York City isn’t getting its fair share of funding. “These