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 9 seconds (queued for 14 seconds)
Status Job ID Name Coverage
  Container Prep
passed #476756
container_prep

00:00:43

 
  Build
passed #476757
build-native-meson

00:01:26