SPRINGFIELD — Illinois Supreme Court rules say police “shall” file traffic tickets in circuit court within two days after issuing them to drivers.But should a ticket be invalidated if the deadline isn’t met? The high court agreed this week to look into that question.The justices on Wednesday took up a case in which a St. Louis-area driver was able to have his ticket thrown out because the local police department regularly failed to file citations within the two-day time frame.The case is one of …