fix unwrap Work run

Author: tchaton

src/lightning_app/utilities/app_helpers.py

@@ -247,13 +247,18 @@ def is_overridden(method_name: str, instance: Optional[object] = None, parent: O
     instance_attr = getattr(instance, method_name, None)
     if instance_attr is None:
         return False
+
     # `Mock(wraps=...)` support
     if isinstance(instance_attr, Mock):
         # access the wrapped function
         instance_attr = instance_attr._mock_wraps
+
     if instance_attr is None:
         return False
 
+    if hasattr(instance_attr, "__wrapped__"):
+        instance_attr = instance_attr.__wrapped__
+
     parent_attr = getattr(parent, method_name, None)
     if parent_attr is None:
         raise ValueError("The parent should define the method")