MC-29102: [2.4.x] [Magento Cloud] Customer receives newsletter unsubscription email after registering for new account

Author: DianaRusin

app/code/Magento/Newsletter/view/frontend/web/js/newsletter-sign-up.js

@@ -33,7 +33,7 @@ define([
          * Send status request and update subscription element according to result.
          */
         updateSignUpStatus: function () {
-            let element = $(this.element),
+            var element = $(this.element),
                 email = element.val(),
                 self = this,
                 newsletterSubscription;