Cook noodles according to package directions. Drain and rinse with cold water; drain well., Meanwhile, toss pork with 1 tablespoon soy sauce and pepper. In a 6-qt. stockpot, heat 1 tablespoon oil over medium-high heat; saute pork until lightly browned, 2-3 minutes. Remove from pot., In same pot, heat remaining oil over medium-high heat; saute ginger and garlic until fragrant, 20-30 seconds. Stir in broth and remaining soy sauce; bring to a boil. Add celery and snow peas; return to a boil. Simmer, uncovered, until crisp-tender, 2-3 minutes. Stir in pork and coleslaw mix; cook just until cabbage begins to wilt. Add noodles; remove from heat. Top with green onions and, if desired, cilantro.