feat: 校验改版时选择的改版物料

apps/wpm/serializers.py

@@ -1195,7 +1195,9 @@ class HandoverSerializer(CustomModelSerializer):
 
         if attrs["type"] == Handover.H_CHANGE:
             attrs["mtype"] = Handover.H_MERGE
-            if "material_changed" not in attrs:
+            if "material_changed" in attrs and attrs["material_changed"]:
+                pass
+            else:
                 raise ParseError("必须指定改版后的物料")
         
         mtype = attrs["mtype"]