Set default to true for coteacher flag

[lfryemason]

This should effectively be a no-op. The flag is turned on already on staging and prod. This will just make sure that eyes tests on test are running.

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We have entered Pixel Lock for Hour of Code!

Computer Science Education Week will be happening from Dec 4 - Dec 10. Alongside this event, we will
be launching our new Hour of Code activity. Please consider any risk introduced in this PR that
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related to the Hour of Code activities, old or new. Even small changes, such as a different button
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PR Checklist:

• Tests provide adequate coverage
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• New features are translatable or updates will not break translations
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• User impact is well-understood and desirable
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