feat(wizard): expand step 3 container to max-w-screen-2xl

shop/components/order-wizard.tsx

@@ -665,7 +665,7 @@ export function OrderWizard({
   }
 
   return (
-    <div className="max-w-5xl mx-auto px-4">
+    <div className={`mx-auto px-4 ${step === 3 ? 'max-w-screen-2xl' : 'max-w-5xl'}`}>
       {/* Global Stepper for Steps 1, 2, 4 */}
       {step !== 3 && (
         <div className="pt-12 pb-6">