Function list_partial_cmp 

pub fn list_partial_cmp<L>(
    a: &L,
    b: &(dyn PartialReflect + 'static),
) -> Option<Ordering>
where
    L: List + ?Sized,

Lexicographically compares two List values and returns their ordering.

Returns None if the comparison couldn’t be performed (e.g., kinds mismatch or an element comparison returns None).