`FatalErrorUtil`: don't override `fatalError` on release builds (#1736)
`FatalErrorUtil`: don't override `fatalError` on release builds (#1736)

This hack is useful for tests, but since it's not needed in production, better to avoid compiling it and overriding Swift's `fatalError`.
RevenueCat/purchases-ios,RevenueCat/purchases-ios,RevenueCat/purchases-ios,RevenueCat/purchases-ios,RevenueCat/purchases-ios