Scope displays Meta messages as empty entries

[Jonathan Cave]

Steps to reproduce:
 - create a situation where the last message in a chat on the DUT is a meta message
    e.g. add the DUT user to a group
 - read the group invite message on the DUT
 - leave Telegram app
 - open Telegram scope
 - refresh the scope

Expected result:
 - in the recent message list I seen useful information

Actual result:
 - the first message will be blank apart from a profile pic which seems to correspond to the meta message