also str representation of unicode character is different.

for same reason as the xhtml_style version, there is no problem with
having more than one listbox, see d2dedca3 (core: remove useless log
in Base_callDialogMethod, 2020-07-03)

See merge request nexedi/erp5!1873

This script has no reason to be an exception to user's title retrieval
permissions.
Non-ERP5 users do not have applicable access control, so handle those
cases specifically. Such users may be:
- since-deleted ERP5 users
- coming from acl_users/zodb_users
Use a generic placeholder when the user is not allowed to see a
transition's actor.

This allows configuring what URLs can be ingested, by default, no URL
can be ingested.