fix: use static auth cookie name to sync session across browser and server contexts

shop/lib/supabase/client.ts

@@ -8,5 +8,10 @@ export function createClient() {
   return createBrowserClient(
     resolveSupabaseUrl(supabaseUrl)!,
     supabaseAnonKey!,
+    {
+      cookieOptions: {
+        name: "webshop-auth-token",
+      },
+    }
   );
 }