fix: refine subflow field filtering to include '|' character check (l…

…angflow-ai#4277)

* Refine subflow field filtering to include '|' character check

* Add resource cleanup in test_components_path to ensure proper closure

* Remove unnecessary try-finally block in test_cli.py

* Remove unused pytest fixture decorator from test_components_path function

* Update test duration tracking in backend tests

src/backend/base/langflow/components/prototypes/sub_flow.py

@@ -90,7 +90,7 @@ def add_inputs_to_build_config(self, inputs_vertex: list[Vertex], build_config:
     async def generate_results(self) -> list[Data]:
         tweaks: dict = {}
         for field in self._attributes:
-            if field != "flow_name":
+            if field != "flow_name" and "|" in field:
                 [node, name] = field.split("|")
                 if node not in tweaks:
                     tweaks[node] = {}