tests: skip dbus-display tests that need a console

tests: skip dbus-display tests that need a console

When compiling with "configure --without-default-devices", the
dbus-display-test fails since it implicitly assumes that the
machine comes with a default console.

There doesn't seem to be an easy way to figure this during build time,
so skip the tests requiring the Console interface at runtime.

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20240221073759.171443-1-marcandre.lureau@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>