fix(subscription): preselect pay channel before navigation

src/app/chat/chat-screen.tsx

@@ -13,6 +13,7 @@ import {
   recordExternalBrowserPromptShown,
   resolveExternalBrowserPromptEligibility,
 } from "@/lib/chat/chat_external_browser";
+import { getDefaultPayChannelForCountryCode } from "@/lib/payment/default_pay_channel";
 
 import { MobileShell } from "@/app/_components/core";
 
@@ -115,10 +116,14 @@ export function ChatScreen() {
   }
 
   function handleMessageLimitUnlock(): void {
+    const defaultPayChannel = getDefaultPayChannelForCountryCode(
+      userState.currentUser?.countryCode,
+    );
     router.push(
       getChatPaywallNavigationUrl(
         authState.loginStatus,
         getInsufficientCreditsSubscriptionType(userState.isVip),
+        defaultPayChannel,
       ),
     );
   }