compositor: Pass the entire string in one-shot when writting logger data

This fixes the situation where the same logger scope is passed multiple
times and the timestamp is being sent before the log mesasge.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Reported-by: Pekka Paalanen <pekka.paalanen@collabora.com>
3 jobs for logging-framework-fixes in 2 minutes and 41 seconds (queued for 31 seconds)
latest
Status Job ID Name Coverage
  Container Prep
passed #885848
container_prep

00:00:42

 
  Build
passed #885849
build-native-meson-default-options

00:01:58

passed #885850
build-native-meson-no-gl-renderer

00:00:27