Don't log non-enabled levels from Geary.Logging.Source

We want to do this in the future, but only when we have better means
of selecting which log messages to display or not.
5 jobs for mjog/logging-update in 17 minutes and 4 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #517735
fedora

00:06:28

passed #517736
ubuntu

00:03:39

 
  Test
passed #517737
flatpak

00:09:07

 
  Deploy
passed #517738
review

00:00:31

passed #517739
allowed to fail manual
stop_review

00:00:57