qga: Re-enable the qga-ssh-test when running without fuzzing

qga: Re-enable the qga-ssh-test when running without fuzzing

According to the comment in qga/meson.build, the test got disabled
since there were problems with the fuzzing job. But instead of
disabling this test completely, we should still be fine running
it when fuzzing is disabled.

Message-ID: <20240426162348.684143-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>