Fix static test

Author: edenduong

app/code/Magento/ImportExport/view/adminhtml/templates/export/form/before.phtml

@@ -89,7 +89,7 @@ require([
             form.action   = oldAction;
         } else {
             alert({
-                content: '<?php echo __('Invalid data'); ?>'
+                content: '<?= $block->escapeHtml(__('Invalid data')); ?>'
             });
         }
     };

app/code/Magento/ImportExport/view/adminhtml/templates/import/form/before.phtml

@@ -209,7 +209,7 @@ require([
         postToFrameProcessResponse: function(response) {
             if ('object' != typeof(response)) {
                 alert({
-                    content: '<?php echo __('Invalid response'); ?>'
+                    content: '<?= $block->escapeHtml(__('Invalid response')); ?>'
                 });
 
                 return false;