DiscoveryWindow: Fix bookmarking a group chat

Fixes #9537
3 jobs for master in 4 minutes (queued for 2 minutes and 33 seconds)
Status Job ID Name Coverage
  Test
passed #9574
run-appdata

00:00:13

passed #9573
run-tests

00:03:34

 
  Build
passed #9575
run-build

00:00:12