SPRINGFIELD — A federal court’s decision to press pause on an Illinois abortion information law was aided by an unlikely source: An Asian-American rock band with a controversial name.U.S. Judge Frederick J. Kapala cited a U.S. Supreme Court decision in a case brought by the band The Slants — who were denied a trademark on their name because of a law that prohibited “disparaging” patent applications — in granting a preliminary injunction against the abortion regulation last week.Kapala …