I watched The Angry Birds Movie 2 again and found something surprising…
After multiple rewatchings of the scene where all the students in Avian Academy are on their way out after Silver's presentation of super string, I listened closer and thought I heard Dahlia (from Angry Birds Stella) say "snooze alert" before turning and leaving. If it's so that she said it, then I'm amazed that we at least get to hear yet another one of Stella's BFFs chirp out something in the movies.