storeKitVersion
iOS-only, will be ignored for Android. By providing StoreKitVersion.DEFAULT, RevenueCat will automatically select the most appropriate StoreKit version for the app's runtime environment.
Warning: Make sure you have an In-App Purchase Key configured in your app. Please see []revenuecat.com](https://rev.cat/in-app-purchase-key-configuration) for more info.
Note: StoreKit 2 is only available on iOS 16+. StoreKit 1 will be used for previous iOS versions regardless of this setting.