[orca-list] Possible fix for Caja's name-spam issue

[Joanmarie Diggs <jdiggs igalia com>]

Hey again.

I just did a pull request against Caja to stop the name-spam problem
where the problem is coming from. If you are able to test that either
with Orca master or Orca 3.28, that would be great. The pull request can
be found here: https://github.com/mate-desktop/caja/pull/979

Thanks again!
--joanie