“Disney Night” – The nine remaining celebrity kids will transform into some of the most magical Disney characters from their favorite Disney films and celebrate the magnificence of “Disney Night” on “Dancing with the Stars: Juniors,” SUNDAY, OCT. 21 (8:00-9:00 p.m. EDT), on The ABC Television Network, streaming and on demand.    Each couple will perform to songs from beloved Disney films, including the animated classics “The Little Mermaid,” “Aladdin,” “Beauty and …