@Composable (PrimerPaymentMethod, () -> Unit) -> Unit
PaymentMethodsDefaults.Method(...)
Slot for each payment method item. Receives method data and onClick callback.
Default behavior
Renders a “Pay with” header, a vertical list of methods with icon, name, and optional surcharge, and groups methods by surcharge amount. Shows PaymentMethodsDefaults.EmptyState() when no methods are available.