Fix DynamicItem row attribute being overridden

discord/ui/dynamic.py

@@ -104,6 +104,7 @@ class DynamicItem(Generic[BaseT], Item['View']):
     ) -> None:
         super().__init__()
         self.item: BaseT = item
+        if row is not None:
             self.row = row
 
         if not self.item.is_dispatchable():