SPRINGFIELD — An anti-abortion group has filed an appeal with the Illinois Supreme Court seeking to block a law allowing state-funded abortions. This time, the challenge is on balanced-budget grounds.The Thomas More Society, a nonprofit, public-interest firm, petitioned the state’s top court to take up its case contesting the constitutionality of House Bill 40. The 4th District Appellate Court in September upheld the dismissal of the underlying Sangamon County lawsuit.HB 40 allows the state to cover abortion …