SPRINGFIELD — A recent U.S. Supreme Court decision could reignite a 10-year-old controversy in Illinois over whether faith-based charities can be prohibited from contracting with the state for foster care and adoption services on the grounds that they refuse to work with unmarried or same-sex couples.In a 9-0 decision Thursday, the nation’s high court ruled against the city of Philadelphia, which had refused to renew a contract for foster care services with Catholic Social Services, arguing that the church-based agency’s …