This is the second in a two-part column. The first part was published on Wednesday.In a big victory for health-care providers who contend they are routinely stiffed on the interest that Section 8.2(d)(3) of the Illinois Workers’ Compensation Act, or IWCA, promises for tardy payments, U.S. District Judge Nancy J. Rosenstengel denied a motion to dismiss the class-action complaint that Dr. Michael Beatty filed against dozens of insurance companies under the Illinois Consumer Fraud Act. Beatty v. Accident Fund General …