Chicago aldermen on Monday gave the first nod to a $4 million payout to the estate of a 7-year-old girl killed when by a city-contracted tractor driver in May 2016.The Chicago City Council Finance Committee also approved a $650,000 settlement to a man who spent four years in jail until Cook County prosecutors dropped the charges against him.The Finance Committee’s consideration of the Law Department’s proposed settlements was business as usual — quite different from last month’s hearing, when a …