Implementing Enhanced Dialogue on tvOS 18

How does a third party developer go about supporting the new Enhanced Dialogue option for video apps in tvOS 18?

If an app is using the standard AVPlayerViewController, I had assumed it would be a simple-ish matter of building against the tvOS 18 SDK but apparently not, the options don't appear, not even greyed out.

Implementing Enhanced Dialogue on tvOS 18
 
 
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