Uhm.... i hate to douse this thread but moana came out in 2016. Caleb and sofia were well before that....
however it does highlight something worth noting. Animators have long been immitating mammals distinct features when newborn. Large round eyes are one of those characteristics and it promites feelings of maternal or paternal care in adults and feelings of friendship in children. Its become very common for animators to use those exaggerated features as a subtle que to make the characters appear more friendly. The “world” has been doing it large scale for 15 or 20 years, its no supprise the wt is using the technique as well.