update order when echeck is rejected

app/Libraries/Payments/PaymentProcessor.php

···
         $this->signature->assertValid();
 
         $order = $this->getOrder();
+        if (($this->params['payment_type']) === 'echeck') {
+            $order->update(['tracking_code' => Order::ECHECK_DENIED]);
+        }
 
         datadog_increment('store.payments.rejected', ['provider' => $this->getPaymentProvider()]);
     }

app/Models/Store/Order.php

···
     use SoftDeletes;
 
     const ECHECK_CLEARED = 'ECHECK CLEARED';
+    const ECHECK_DENIED = 'ECHECK DENIED';
     const ORDER_NUMBER_REGEX = '/^(?<prefix>[A-Za-z]+)-(?<userId>\d+)-(?<orderId>\d+)$/';
     const PENDING_ECHECK = 'PENDING ECHECK';