`{{link-to}}` transitioning classes are incorrect after `transition.abort()`

twiddle: https://ember-twiddle.com/8aa9da800a7883b6c59a?openFiles=routes.page2.js%2C

The `ember-transitioning-in` and `.ember-transitioning-out` classes don't seem to be updated correctly when linking to a route that aborts the transition:

``` js
export default Ember.Route.extend({
beforeModel: function(transition) {
return delay(1000).then(function() {
transition.abort();
});
}
});
```

I'll try to create a failing test now