Fix issues with non-run wrapped store.createRecord

[rwjblue]

The codemod currently rewrites this.subject() within moduleForModel tests to:

    let subject = this.owner.lookup('service:store').createRecord('foo');

But due to emberjs/data#5247 in ember-data we actually must run-wrap the .createRecord call.

The output should become:

    let subject = run(() => this.owner.lookup('service:store').createRecord('foo'));

😭

[rwjblue]

Ugh. Looks like we will have to add import Ember from 'ember'; in this case, or hard code the requirement to use [email protected] to get the newer JS modules API for bringing in Ember.run.