Overwrite lists of chat when updating them

Signed-off-by: Cyril Dutrieux <cyril@cdutrieux.fr>
3 jobs for !27 with sorting_chat_and_channels in 1 minute and 50 seconds (queued for 2 seconds)
latest detached
Status Job ID Name Coverage
  Check
passed #1627
docker
analyze

00:01:13

passed #1626
docker
format

00:00:20

 
  Build
failed #1628
docker
build_debug

00:00:16

 
Name Stage Failure
failed
build_debug Build
Skipping Git submodules setup
Restoring cache
Downloading artifacts
Running before_script and script
$ cd /home/cirrus/sdks/flutter && git remote add origin https://github.com/flutter/flutter
fatal: remote origin already exists.
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1