LANSING, Mich. — The Michigan Supreme Court has declined to expedite an appeal in the Republican-led Legislature’s lawsuit challenging Democratic Gov. Gretchen Whitmer’s stay-at-home restrictions. A judge ruled in her favor two weeks ago. Both lawmakers and the governor wanted the high court to skip the appeals court and hear the case now. But in a 4-3 ruling Thursday, the court said the case should follow the normal process. Also Thursday, Michigan’s school superintendent sid K-12 districts are confronting the possibility of staggering spending cuts unless Congress helps fill a nearly $2.4 billion revenue shortfall over this budget year and next.