By Andrew Chung (Reuters) – The U.S. Supreme Court last March rebuffed an emergency request by North Carolina Republicans to allow the use in November’s congressional elections of an electoral map they drew that a lower court invalidated for unlawfully disadvantaging Democrats. It was a short-term setback for the North Carolina Republicans, but they soon will get a chance to claim a bigger legal victory. Conservative Justice Brett Kavanaugh suggested at the time that the justices take up the underlying legal dispute, one that could provide state legislators around the country the ability to en…