When being notified on a document they cannot read users should be able to
post, as indicated in message ACLs. However some data preparation prevents
from doing it as ACLs are raised on document level.
In this commit we sudo the call to display_name to populate record_name when
not given. Indeed access is checked at message level so no need to crash in
this specific use case.
Task-3213982 (Mail: fix 'multi-company' post support)
X-original-commit: odoo/odoo@2d73c61136
Part-of: odoo/odoo#114511
Thibault Delavallée
acfb07e79c