Fixade CORS-importen

X-Lovable-Edit-ID: edt-7e7caba5-d406-40db-84fb-0b935f27b7ad
Co-authored-by: wolfoftyreso-debug <250630591+wolfoftyreso-debug@users.noreply.github.com>

supabase/functions/create-checkout/index.ts

@@ -1,7 +1,12 @@
-import { corsHeaders } from "npm:@supabase/supabase-js@2/cors";
 import { z } from "npm:zod@3.23.8";
 import { type StripeEnv, createStripeClient } from "../_shared/stripe.ts";
 
+const corsHeaders = {
+  "Access-Control-Allow-Origin": "*",
+  "Access-Control-Allow-Headers": "authorization, x-client-info, apikey, content-type",
+  "Access-Control-Allow-Methods": "POST, OPTIONS",
+};
+
 const PRICE_PER_KG_ORE = 32500; // 325 kr in öre
 const WEEKS_PER_MONTH = 4;