update default sort logic

src/populate.py

@@ -60,7 +60,7 @@ def get_leaderboard_df_crm(
     )
 
     leaderboard_accuracy_df = leaderboard_accuracy_df.sort_values(
-        by=[AutoEvalColumn.accuracy_metric_average.name], ascending=False
+        by=[AutoEvalColumn.use_case_name.name, AutoEvalColumn.accuracy_metric_average.name], ascending=[True, False]
     )
     leaderboard_accuracy_df = leaderboard_accuracy_df[accuracy_cols].round(decimals=2)
     return leaderboard_accuracy_df