prevent visualize from crashing

If somehting exists in saved_results.json, that doesnt in the
suite_settings (comented out e.g.) it crashed. Now it doesnt.

visualize.py

@@ -18,6 +18,7 @@ def get_df() -> pd.DataFrame:
         data = json.load(f)
     raw_data = []
     for test_hash, test_data in data.items():
+        try:
             raw_data.append({
                 "hash": test_hash,
                 "model_name": models[test_data['model_id']].display_name,
@@ -28,6 +29,8 @@ def get_df() -> pd.DataFrame:
                 "test_name": tests[test_data['test_id']].name,
                 "validation": test_data['validation']
             })
+        except KeyError:
+            pass
 
     df = pd.DataFrame(raw_data)