feat: fix ruff issues

taipy/gui/gui_actions.py

@@ -369,6 +369,11 @@ def invoke_long_callback(
     """
     if not state or not isinstance(state._gui, Gui):
         _warn("'invoke_long_callback()' must be called in the context of a callback.")
+
+    if user_status_function_args is None:
+        user_status_function_args = []
+    if user_function_args is None:
+        user_function_args = []
         return
 
     if user_status_function_args is None:

taipy/gui/server.py

@@ -160,7 +160,7 @@ class _Server:
                         css_vars=css_vars,
                         base_url=base_url,
                     )
-                except Exception:  # pragma: no cover
+                except Exception:
                     raise RuntimeError(
                         "Something is wrong with the taipy-gui front-end installation. Check that the js bundle has been properly built (is Node.js installed?)."  # noqa: E501
                     ) from None

tests/core/_orchestrator/test_orchestrator.py

@@ -29,7 +29,6 @@ from taipy.core.submission.submission_status import SubmissionStatus
 from taipy.core.task.task import Task
 from tests.core.utils import assert_true_after_time
 
-
 # ################################  USER FUNCTIONS  ##################################