A little more than a year after adding rules that say juvenile defendants generally shouldn’t be shackled during trials, the state’s top court has limited the practice in civil courtrooms.The Illinois Supreme Court has ruled judges should err against using physical restraints in involuntary commitment and treatment proceedings.A unanimous high court last week wrote that judges should only require patients to be cuffed or shackled if they find a “manifest necessity” for them, based on the need for …