A Cook County probate judge signed off on a $4.5 million settlement for a woman who died after an attempted wisdom tooth removal.Cook County Circuit Judge John H. Ehrlich approved the agreement in July after a contested hearing to determine how the settlement would be distributed among the plaintiffs’ estate.On Wednesday, Circuit Judge Karen O’Malley in the Probate Division gave the final approval.Mary Tadros, 31, went to John H. Stroger Jr. Hospital of Cook County in September 2011 to have her left lower wisdom tooth …