In a large skillet, heat oil over medium-high heat. Brown pork in batches. Remove to a 5-qt. slow cooker. Stir in the next nine ingredients., Cook, covered, on low until meat and vegetables are tender, 4-5 hours. Stir in edamame. Break up noodles slightly; stir into soup, discarding or saving seasoning packet for another use. Cook, covered, on low until noodles are al dente, 10-15 minutes., Serve immediately. If desired, top with green onions.