refactor: update type exports to use ShopifyCheckout naming convention

Author: kieran-osgood-shopify

modules/@shopify/checkout-sheet-kit/src/index.ts

@@ -530,7 +530,7 @@ export type {
   AcceleratedCheckoutButtonsProps,
   RenderStateChangeEvent,
 } from './components/AcceleratedCheckoutButtons';
-export type {ShopifyCheckoutProps as CheckoutProps, ShopifyCheckoutRef as CheckoutRef} from './components/Checkout';
+export type {ShopifyCheckoutProps, ShopifyCheckoutRef} from './components/Checkout';
 export type {ShopifyCheckoutEventProviderProps} from './ShopifyCheckoutEventProvider';
 
 // Components

sample/src/screens/BuyNow/CheckoutScreen.tsx

@@ -25,7 +25,7 @@ import {
   type CheckoutAddressChangeStart,
   type CheckoutCompleteEvent,
   type CheckoutPaymentMethodChangeStart,
-  type CheckoutRef,
+  type ShopifyCheckoutRef,
   type CheckoutStartEvent,
   type CheckoutSubmitStart,
   useCheckoutEvents,
@@ -39,7 +39,7 @@ export default function CheckoutScreen(props: {
   route: RouteProp<BuyNowStackParamList, 'Checkout'>;
 }) {
   const navigation = useNavigation<NavigationProp<BuyNowStackParamList>>();
-  const ref = useRef<CheckoutRef>(null);
+  const ref = useRef<ShopifyCheckoutRef>(null);
   const eventContext = useCheckoutEvents();
 
   const onStart = (event: CheckoutStartEvent) => {