8 ounces uncooked cavatelli or orecchiette pasta 1/4 cup all-purpose flour 1/2 teaspoon salt 2 cups 2% reduced-fat milk 1 1/4 cups (5 ounces) shredded Gruyère cheese, divided 1 tablespoon butter 1 1/2 pounds large shrimp, peeled and deveined 3 garlic cloves, minced 2 tablespoons dry white wine 1/4 teaspoon ground red pepper 2 cups…