fix(tests): correct order of error message assertions

Reordered the error message assertions in `test_cli.py` to ensure the
"Invalid key" error is checked first. This improves the clarity and
accuracy of the test failure messages.

Author: mkoura

cardano_node_tests/tests/test_cli.py

@@ -711,8 +711,8 @@ def test_non_extended_key_error(self, cluster: clusterlib.ClusterLib):
 
         err_str = str(excinfo.value)
         assert (
-            "TextEnvelope type error:  Expected one of:" in err_str
-            or "key non-extended-key  Error: Invalid key." in err_str
+            "Error: Invalid key." in err_str
+            or "TextEnvelope type error:  Expected one of:" in err_str
         ), err_str