Update test_lmfit_dialog.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: wyzula-jan

tests/unit_tests/test_lmfit_dialog.py

@@ -194,6 +194,6 @@ def test_compact_ui_hides_curve_selection_and_keeps_action_column(
     dialog.active_action_list = ["center"]
     dialog.update_summary_tree(data=lmfit_message, metadata={"curve_id": "test_curve_id"})
 
-    assert dialog.ui.group_curve_selection.isVisible() is False
+    assert dialog.ui.group_curve_selection.isHidden()
     assert dialog.ui.param_tree.columnCount() == 4
     assert "center" in dialog.action_buttons