smbd: Don't hide directories with "hide new files timeout"

smbd: Don't hide directories with "hide new files timeout"

The intention of this option was to hide *files*. Before this patch we
also hide directories where new files are dropped.

This is a change in behaviour, but I think this option is niche enough
to justify not adding another parameter that we then need to test. If
workflows break with this change and people depend on directories also
to be hidden, we can still add the additional option value required.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Nov  7 22:58:33 UTC 2022 on sn-devel-184