Purchase history of consumables for iOS app

I recently implemented RevenueCat in an existing app.

I noticed that when a user makes any purchase through the RevenueCat SDK, the "Customer Profile" screen on the dashboard shows the purchase history (including consumable items) prior to the introduction of RevenueCat.
How is this accomplished?
In StoreKit 2, you cannot get the purchase history of consumable items by `Transaction.all` (for iOS 17 and below).

Also, is there a way to retrieve past purchase history, including consumable items, for users who have not yet purchased anything after introducing RevenueCat?
It appears that `Purchases.shared.customerInfo().nonSubscriptions` does not return a history of past purchases of consumable items for users who have not yet purchased anything after introducing RevenueCat.