glib: Use safe glib event workaround in other event loops

glib: Use safe glib event workaround in other event loops

Similarly to the crash workaround:

  commit 0db4743645b7a0611a3c0687f834205c9956f7fc
  Author: Daniel P. Berrangé <berrange@redhat.com>
  Date:   Tue Jul 28 16:52:47 2020 +0100

    util: avoid crash due to race in glib event loop code

we need to do this in the other event loop as crash in that one was also
reported:

  https://bugzilla.redhat.com/show_bug.cgi?id=1931331

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>