feat: mlog 支持handle_user 默认create_by

apps/wpm/serializers.py

@@ -469,6 +469,9 @@ class MlogSerializer(CustomModelSerializer):
             material_out = attrs['material_out']
             if not (mgroup and material_out):
                 raise ValidationError('缺少工段或产物!')
+        handle_user = attrs.get('handle_user', None)
+        if handle_user is None and hasattr(self, "request"):
+            handle_user = self.request.user
         return attrs