Fix coverage

Author: dmontagu

pydantic_graph/pydantic_graph/beta/graph_builder.py

@@ -329,8 +329,8 @@ def _handle_path(p: Path):
                     pass
 
         def _handle_destination_node(d: AnyDestinationNode):
-            if id(d) in destination_ids:  # pragma: no cover
-                return  # prevent infinite recursion if there is a cycle of decisions; not sure if this is possible
+            if id(d) in destination_ids:
+                return  # prevent infinite recursion if there is a cycle of decisions
 
             destination_ids.add(id(d))
             destinations.append(d)