Republicans and all fair-minded New York voters dodged a bullet in March. That’s when the US Supreme Court halted a lawsuit that aimed to redraw New York City’s only GOP House seat out of existence — the third round of Empire State redistricting in as many election cycles. But on Wednesday the gerrymander frenzy among New York Democrats sparked anew, after the high court struck down race-based redistricting in a landmark case. Gov. Kathy Hochul howled that the justices were “clearly carrying