Push down cast

Signed-off-by: Nicholas Gates <[email protected]>

Author: gatesn

vortex-array/src/arrays/struct_/vtable/rules.rs

@@ -7,6 +7,7 @@ use crate::ArrayRef;
 use crate::IntoArray;
 use crate::arrays::ConstantArray;
 use crate::arrays::ExactScalarFn;
+use crate::arrays::ScalarFnArrayExt;
 use crate::arrays::ScalarFnArrayView;
 use crate::arrays::StructArray;
 use crate::arrays::StructVTable;