Make ScoringSheet results deterministic (#6924)

Author: ZanMervic

Orange/classification/scoringsheet.py

@@ -56,7 +56,9 @@ def __init__(
         if preprocessors is None:
             self.preprocessors = [
                 *self.preprocessors,
-                SelectBestFeatures(method=ReliefF(), k=num_attr_after_selection),
+                SelectBestFeatures(
+                    method=ReliefF(random_state=42), k=num_attr_after_selection
+                ),
             ]
 
         super().__init__(preprocessors=preprocessors)

Orange/widgets/model/tests/test_owscoringsheet.py

@@ -64,8 +64,7 @@ def test_settings_in_model(self):
 
         self.assertEqual(len(coefficients), self.widget.num_attr_after_selection)
 
-        # most often equal, but in some cases the optimizer finds fewer parameters
-        self.assertLessEqual(len(non_zero_coefficients), self.widget.num_decision_params)
+        self.assertEqual(len(non_zero_coefficients), self.widget.num_decision_params)
 
         self.assertLessEqual(
             max(non_zero_coefficients, key=lambda x: abs(x)),