Admin REST API: Getting a list of usage charges always returns an empty array

[gentlemon]

I just checked the changelog, at it seems our issues more or less match with this new change:

https://shopify.dev/changelog/new-webhooks-and-app-events-for-app-usage-spending-limits-and-changes-to-balanced_used

Since there was something changed on this endpoint, I assume this is connected to the issue.