Cumin Lamb Noodles

Name: Cumin Lamb Noodles
Ingredients: 2 pounds (1-inch-thick) bone-in lamb shoulder steaks (about 4 steaks); 1 tablespoon ground cumin; 1 1/2 teaspoons cornstarch; 1 teaspoon kosher salt; 3 tablespoons neutral cooking oil (such as avocado), divided; 8 ounces dried wide wheat noodles; 1 teaspoon cumin seeds (optional); 1 small white onion, thinly sliced (about 1 1/2 cups); 2 tablespoons chile crisp, plus more to taste; 2 tablespoons water; 4 teaspoons black vinegar; 2 teaspoons dark soy sauce; Torn fresh cilantro leaves, for garnish