fix: refine subflow field filtering to include '|' character check (#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 @@ class SubFlowComponent(Component):
     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] = {}

src/backend/tests/unit/test_cli.py

@@ -11,10 +11,10 @@ def default_settings():
     ]
 
 
-@pytest.mark.usefixtures("client")
 def test_components_path(runner, default_settings, tmp_path):
     # create a "components" folder
     temp_dir = tmp_path / "components"
+    temp_dir.mkdir(exist_ok=True)
 
     result = runner.invoke(
         app,