feat(payment): enhance payment configuration to include active gateways and update CORS settings

src/Payment/Gateway/MockGateway.php

@@ -6,6 +6,8 @@ class MockGateway implements PaymentGatewayInterface
 {
     public function getName(): string { return 'mock'; }
 
+    public function isConfigured(): bool { return true; }
+
     public function initiate(int $amountRials, string $orderId, string $callbackUrl): PaymentInitResult
     {
         $redirectUrl = $callbackUrl . '&mock=1&ResCode=0&RefId=MOCK-' . $orderId;