Array query params do not track mutation

If you have a link like this one: `{{#link-to 'foo' (query-params numbers=numbers)}}` the URL of the link does not get updated if `numbers` is mutated with `pushObject/removeObject`, you have to replace the array by a different array.

It's not too bad as a bug because clicking the link still works as expected when clicked, it's just the href of the link the one that doesn't update. Perhaps something to take into account in the new `url-for` helpers that is part of the new route service.

Reproduction in a twiddle: https://ember-twiddle.com/ac26716b462cf3e53398b42a390a29e3?openFiles=controllers.application.js%2C&route=%2Ffoo%3Fnames%3D%255B%2522Mary%2522%255D