Place store on Ember.Route to maintain default store behaviour

[snewcomer]

ref emberjs/rfcs#774

Fix #7744

[igorT]

Once we fix the implicit injection deprecation for 3.28 do we still need to do this?

[snewcomer]

Bringing our conversation here:

In 4.0, if you are relying in implicit record loading and have ember-data installed and generate a new route (that triggers a store.find b/c it can parse the params), it will break vs. 3.28. We technically deprecated implicit store injection in 3.x and will be improved in emberjs/ember.js#19854.

Do we necessarily want to put the store on the Route still? Are we ok breaking "new" routes? Or is that bad?

[snewcomer]

Not reopening b/c only affected items are blueprints.