Use the correct status canceled (single letter l rather than the double one)

Author: htdat

includes/class-wc-payments-webhook-processing-service.php

@@ -300,7 +300,7 @@ private function process_webhook_refund_updated( $event_body ) {
 					$this->order_service->handle_insufficient_balance_for_refund( $order, $amount );
 				}
 				break;
-			case Refund_Status::CANCELLED:
+			case Refund_Status::CANCELED:
 				$this->order_service->handle_failed_refund( $order, $refund_id, $amount, $currency, $matched_wc_refund, true );
 				break;
 			case Refund_Status::SUCCEEDED:

includes/constants/class-refund-status.php

@@ -20,5 +20,5 @@ class Refund_Status extends Base_Constant {
 	const PENDING   = 'pending';
 	const SUCCEEDED = 'succeeded';
 	const FAILED    = 'failed';
-	const CANCELLED = 'cancelled';
+	const CANCELED  = 'cancelled';
 }

tests/unit/test-class-wc-payments-webhook-processing-service.php

@@ -355,7 +355,7 @@ public function test_cancelled_refund_update_webhook_with_matched_wc_refund() {
 		$this->event_body['type']           = 'charge.refund.updated';
 		$this->event_body['livemode']       = true;
 		$this->event_body['data']['object'] = [
-			'status'   => Refund_Status::CANCELLED,
+			'status'   => Refund_Status::CANCELED,
 			'charge'   => 'test_charge_id',
 			'id'       => 'test_refund_id',
 			'amount'   => 999,