MC-2369: Implement full width layout for category

- Remove unused depdency on $context
- Add return type array to before plugin function

Author: davemacaulay

app/code/Magento/PageBuilder/Plugin/Result/Page.php

@@ -9,25 +9,10 @@
 namespace Magento\PageBuilder\Plugin\Result;
 
 use Magento\Framework\App\ResponseInterface;
-use Magento\Framework\View\Element\Context;
 use Magento\Framework\View\Result\Page as ResultPage;
 
 class Page
 {
-    /**
-     * @var \Magento\Framework\View\Element\Context
-     */
-    private $context;
-
-    /**
-     * @param Context $context
-     */
-    public function __construct(
-        Context $context
-    ) {
-        $this->context = $context;
-    }
-
     /**
      * @param ResultPage $subject
      * @param ResponseInterface $response
@@ -36,7 +21,7 @@ public function __construct(
     public function beforeRenderResult(
         ResultPage $subject,
         ResponseInterface $response
-    ) {
+    ) : array {
         // Apply the updated layout handles classes to the body when using our full width variants
         if ($subject->getConfig()->getPageLayout() == 'product-full-width') {
             $subject->getConfig()->addBodyClass('page-layout-1column');