without calling hasMany('foo').remoteType() the remote type may change in 2.14+

[luxzeitlos]

Assuming we have the following models:

Bar:

export default DS.Model.extend({
  foo: DS.belongsTo('foo'),
});

Foo:

export default DS.Model.extend({
  bars: DS.hasMany('bar'),
});

Now assume the following code:

store.push({
  data: {
    id: '1',
    type: 'foo',
    relationships: {
      bars: {
        links: {
          related: '/api/foo/1/relationships/bars/data/'
        }
      }
    }
  }
});

const foo = store.peekRecord('foo', '1');

// In 2.14+ if this line is is active the `remoteType` will be fixed and so be `link`. However if its not active the following call to `store.push` will change the `remoteType` to `ids`. This will also cause the behaviour of `reload()` to change. In 2.13 the remoteType will never be `ids`.
// console.log(foo.hasMany('bars').remoteType());

store.push({
  data: {
    id: '1',
    type: 'bar',
    relationships: {
      foo: {
        data: {
          id: '1',
          type: 'foo',
        }
      }
    }
  }
});

// in 2.13 this will always return `link`. However in 2.14+ this will return `ids` when remoteType() has not been called before the second store.push, otherwise it will be link.
console.log(foo.hasMany('bars').remoteType());

[runspired]

This should have been resolved with #5410, please reopen if it was not.