Show author name when previous message was deleted

This will cause the name to show up more often than necessary, but that's better than not showing it at all, which leads to messages being attributed to the wrong person.
The root cause here is a mismatch in event visibility between EventStatus::Hidden and filterAcceptsRow in MessageFilterModel, which will be fixed in a future patch.

src/models/messageeventmodel.cpp

@@ -609,7 +609,10 @@ QVariant MessageEventModel::data(const QModelIndex &idx, int role) const
             if (data(i, SpecialMarksRole) != EventStatus::Hidden && !itemData(i).empty()) {
                 return data(i, AuthorRole) != data(idx, AuthorRole) || data(i, DelegateTypeRole) == DelegateType::State
                     || data(i, TimeRole).toDateTime().msecsTo(data(idx, TimeRole).toDateTime()) > 600000
-                    || data(i, TimeRole).toDateTime().toLocalTime().date().day() != data(idx, TimeRole).toDateTime().toLocalTime().date().day();
+                    || data(i, TimeRole).toDateTime().toLocalTime().date().day() != data(idx, TimeRole).toDateTime().toLocalTime().date().day()
+                    // FIXME: This should not be necessary; the proper fix is to calculate this role in MessageFilterModel with the knowledge about the filtered
+                    // events.
+                    || data(i, IsRedactedRole).toBool();
             }
         }