The same day the same justices tossed a similar sentence from the same judge as unconstitutional, a state appeals court last Friday upheld a probationary order telling a teenager to steer clear of gangs.While Cook County Circuit Judge Kristal Royce Rivers initially ordered juveniles K.M. and Jawan S. to stay away from gang members as terms of their respective probations, she later vacated Jawan S.’s order, revising it …