feat(MED-85): update webhook url to have public path in test env

lib/services/medusaCart.service.ts

@@ -8,14 +8,14 @@ import { StoreCartLineItem, StoreProductVariant } from '@medusajs/types';
 import { MontonioOrderHandlerService } from '@/packages/billing/montonio/src';
 import { requireUserInServerComponent } from '../server/require-user-in-server-component';
 
-const medusaBackendUrl = process.env.MEDUSA_BACKEND_URL!;
+const medusaBackendPublicUrl = process.env.MEDUSA_BACKEND_PUBLIC_URL!;
 const siteUrl = process.env.NEXT_PUBLIC_SITE_URL!;
 
 const env = z
   .object({
-    medusaBackendUrl: z
+    medusaBackendPublicUrl: z
       .string({
-        required_error: 'MEDUSA_BACKEND_URL is required',
+        required_error: 'MEDUSA_BACKEND_PUBLIC_URL is required',
       })
       .min(1),
     siteUrl: z
@@ -25,7 +25,7 @@ const env = z
       .min(1),
   })
   .parse({
-    medusaBackendUrl,
+    medusaBackendPublicUrl,
     siteUrl,
   });
 
@@ -81,7 +81,7 @@ export async function handleNavigateToPayment({ language, paymentSessionId }: {
   }
 
   const paymentLink = await new MontonioOrderHandlerService().getMontonioPaymentLink({
-    notificationUrl: `${env.medusaBackendUrl}/api/billing/webhook`,
+    notificationUrl: `${env.medusaBackendPublicUrl}/hooks/payment/montonio_montonio`,
     returnUrl: `${env.siteUrl}/home/cart/montonio-callback`,
     amount: cart.total,
     currency: cart.currency_code.toUpperCase(),