Issue #3443376: Fix eslint in commerce_checkout

Closes #3443376

modules/checkout/js/commerce_checkout.admin.js

@@ -74,11 +74,12 @@
       $(rowObject.table)
         .find('tr.region-message')
         .each(function () {
-          const $that = $(this);
+          const message = this;
+          const $message = $(message);
           // If the dragged row is in this region, but above the message row, swap
           // it down one space.
           if (
-            $that.prev('tr').get(0) ===
+            $message.prev('tr').get(0) ===
             rowObject.group[rowObject.group.length - 1]
           ) {
             // Prevent a recursion problem when using the keyboard to move rows
@@ -90,16 +91,14 @@
               rowObject.swap('after', this);
             }
           }
+          const nextRow = message.nextElementSibling;
           // This region has become empty.
-          if (
-            $that.next('tr').is(':not(.draggable)') ||
-            $that.next('tr').length === 0
-          ) {
-            $that.removeClass('region-populated').addClass('region-empty');
+          if (!nextRow || !nextRow.matches('.draggable')) {
+            $message.removeClass('region-populated').addClass('region-empty');
           }
           // This region has become populated.
-          else if ($that.is('.region-empty')) {
-            $that.removeClass('region-empty').addClass('region-populated');
+          else if (message.matches('.region-empty')) {
+            $message.removeClass('region-empty').addClass('region-populated');
           }
         });
     },