mat-progress-spinner indeterminate mode is completely static in IE 11

[mth654]

Bug, feature request, or proposal:

Bug

What is the expected behavior?

Progress spinner should spin when in indeterminate mode.

What is the current behavior?

The spinner is displayed as a static circle, does not move at all.

What are the steps to reproduce?

Broken instance can be seen in the material guide: https://material.angular.io/components/progress-spinner/overview

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

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

Issue occurs in Angular 4.4.5, Material 2.0.0-beta12, TypeScript 2.5.3, Windows 7, and IE 11 (web-animations-js and classList polyfills are loaded)

Is there anything else we should know?

The progress bar works as expected in indeterminate and query mode.

[danwulff]

Also occurs on Edge browser:
Microsoft Edge 40.15063.674.0
Microsoft EdgeHTML 15.15063

[donroyco]

Will be solved by #7599

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