Fix MacroPanel instantiation in unit test to use None as parent for improved consistency

Author: PierreRaybaut

datalab/tests/features/macro/macroeditor_unit_test.py

@@ -54,7 +54,7 @@ def get_macro_example_path() -> str:
 def test_macro_editor():
     """Test dep viewer window"""
     with qt_app_context(exec_loop=True):
-        widget = macro.MacroPanel()
+        widget = macro.MacroPanel(None)
         widget.resize(800, 600)
         widget.show()