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/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,