test_self_handle: don't assume that SelfHandleChanged is processed instantly
test_self_handle: don't assume that SelfHandleChanged is processed instantly

We'll soon need to make a contact object, perhaps asynchronously.

Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib