fix: description field in items saving+displaying

test/helpers/test_models.dart

@@ -153,6 +153,7 @@ ListItem makeListItem({
   int id = 1,
   int listId = 1,
   String name = 'Milk',
+  String? description,
   int? categoryId,
   String? quantity,
   bool done = false,
@@ -170,6 +171,7 @@ ListItem makeListItem({
   id: id,
   listId: listId,
   name: name,
+  description: description,
   categoryId: categoryId,
   quantity: quantity,
   done: done,