MC-17003: Update Totals button is missing from Credit Memo page

Author: DianaRusin

dev/tests/functional/tests/app/Magento/Sales/Test/Block/Adminhtml/Order/Creditmemo/Totals.php

@@ -4,6 +4,8 @@
  * See COPYING.txt for license details.
  */
 
+declare(strict_types=1);
+
 namespace Magento\Sales\Test\Block\Adminhtml\Order\Creditmemo;
 
 use Magento\Mtf\Client\Locator;

dev/tests/functional/tests/app/Magento/Sales/Test/TestStep/CreateCreditMemoStep.php

@@ -4,6 +4,8 @@
  * See COPYING.txt for license details.
  */
 
+declare(strict_types=1);
+
 namespace Magento\Sales\Test\TestStep;
 
 use Magento\Checkout\Test\Fixture\Cart;
@@ -138,7 +140,7 @@ private function isTotalsDataChanged(array $data): bool
         ];
 
         foreach ($compareData as $fieldName => $fieldValue) {
-            if (isset($data['form_data'][$fieldName]) && $fieldValue != $data['form_data'][$fieldName]) {
+            if (isset($data['form_data'][$fieldName]) && $fieldValue !== $data['form_data'][$fieldName]) {
                 return true;
             }
         }