ISSUE-27397 - Reformat phrase check (no functional change)

Author: Zach Nanninga

app/code/Magento/Widget/Controller/Adminhtml/Widget/Instance/Validate.php

@@ -19,11 +19,8 @@ public function execute()
         $response->setError(false);
         $widgetInstance = $this->_initWidgetInstance();
         $result = $widgetInstance->validate();
-        if ($result instanceof \Magento\Framework\Phrase) {
-            $result = (string) $result;
-        }
-        if ($result !== true && is_string($result)) {
-            $this->messageManager->addError($result);
+        if ($result !== true && (is_string($result) || $result instanceof \Magento\Framework\Phrase)) {
+            $this->messageManager->addError((string) $result);
             $this->_view->getLayout()->initMessages();
             $response->setError(true);
             $response->setHtmlMessage($this->_view->getLayout()->getMessagesBlock()->getGroupedHtml());