She’s a familiar figure at Chicago City Council hearings persuading aldermen to settle major lawsuits and avoid costlier trials. Now, instead of playing defense, she’ll oversee the city’s legal efforts on offense.Jane E. Notz last week took over as the head of the Law Department’s Affirmative Litigation Division — a new entity spearheading lawsuits into consumer credit-reporting agency Equifax and ride-sharing company Uber over alleged failures to protect Chicago residents’ personal data …