[FIX] mail: Chatter widget: keep void list of ids when fetching messages;
only specific false ids should be replaced by a domain.
[FIX] mail: Chatter widget: the RecordThread widget, that is
used to display the Chatter on documents, should use the
domain defined on the field. Indeed this domain is used when
computing the 'read more' expandable domains.
Before this fix it was not taken into account, leading to
messages being fetched without respecting the domain
defined on the field.