compositor: Bring back the old timestamp format for the log scope

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Reported-by: Pekka Paalanen <pekka.paalanen@collabora.com>
2 jobs for fix-align-stamp in 2 minutes and 23 seconds (queued for 27 seconds)
Status Job ID Name Coverage
  Container Prep
passed #475925
container_prep

00:00:21

 
  Build
passed #475926
build-native-meson

00:02:01