md-select wrong style when inside an invalid form

[HopScotch47]

Bug, feature request, or proposal:

Bug.

What is the expected behavior?

The select control should prioritize its own valid flag over the form's invalid flag

What is the current behavior?

ng-select shows invalid state if the form is marked as ng-invalid even when the select itself has the ng-valid class

What are the steps to reproduce?

Providing a Plunker (or similar) is the best way to get the team to see your issue.
Plunker: http://plnkr.co/edit/wLkZWMBZs0gngUmkMJHn?p=preview
I fudged the classes to simplify the plunkr

What is the use-case or motivation for changing an existing behavior?

Which versions of Angular, Material, OS, browsers are affected?

I noticed this on 11-3 but I believe the plunkr uses the master version which still has this behaviour

Is there anything else we should know?

[kara]

This was fixed in #2166. It's fixed in master and the beta version (the plunker actually points to the last release on npm).

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