Instant Pot Jambalaya

Name: Instant Pot Jambalaya
Ingredients: 2 c. long-grain white rice; 2 tsp. neutral oil, such as canola; 12 oz. andouille or smoked sausage, cut into 1/2 pieces; 1 medium green bell pepper, seeds and ribs removed, chopped (about 1 c.); 0.5 medium yellow onion, chopped (about 1 c.); 2 medium stalks celery, chopped (about 3/4 c.); 4 cloves garlic, finely chopped; 2 dried bay leaves; 2 tsp. Worcestershire sauce; 1 tsp. dried thyme; 0.5 tsp. freshly ground black pepper; 4 tsp. Cajun seasoning with salt (or 2 tsp. salt-free Cajun seasoning plus 2 tsp. kosher salt), divided; 2 tsp. kosher salt; 8 oz. boneless, skinless chicken thighs, cut into 1 pieces; 3 c. low-sodium chicken broth; 4 scallions, finely chopped