tests: make test_raw_raise pass with AVM_CREATE_STACKTRACES=off

When using AVM_CREATE_STACKTRACES=off undefined is used as stacktrace
value, making `test_raw_raise` fail.

Since it is a known behavior also accept it, but this behavior should be
checked and reviewed (e.g. `[]` might be used instead as stack trace
value).

See also #1247

Signed-off-by: Davide Bettio <davide@uninstall.it>

tests/erlang_tests/test_raw_raise.erl

@@ -30,8 +30,11 @@ do_catch() ->
         _X -> 1
     catch
         error:{badarith, new_reason}:ST ->
+            % TODO: verify if undefined is an acceptable value or an AtomVM only extension
+            % See also issue #1247
             case ST of
                 L when is_list(L) -> 0;
+                undefined -> 0;
                 _ -> 2
             end;
         _:_ ->