ENGCOM-2429: [Backport] Fix meta title property #16948

Author: Stanislav Idolov

lib/internal/Magento/Framework/View/Page/Config.php

@@ -117,6 +117,7 @@ class Config
         'description' => null,
         'keywords' => null,
         'robots' => null,
+        'title' => null,
     ];
 
     /**

lib/internal/Magento/Framework/View/Page/Config/Renderer.php

@@ -136,6 +136,12 @@ public function renderMetadata()
     protected function processMetadataContent($name, $content)
     {
         $method = 'get' . $this->string->upperCaseWords($name, '_', '');
+        if ($name === 'title') {
+            if (!$content) {
+                $content = $this->escaper->escapeHtml($this->pageConfig->$method()->get());
+            }
+            return $content;
+        }
         if (method_exists($this->pageConfig, $method)) {
             $content = $this->pageConfig->$method();
         }

lib/internal/Magento/Framework/View/Test/Unit/Page/ConfigTest.php

@@ -13,7 +13,7 @@
 use Magento\Framework\View\Page\Config;
 
 /**
- * @covers Magento\Framework\View\Page\Config
+ * @covers \Magento\Framework\View\Page\Config
  *
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
@@ -137,6 +137,7 @@ public function testMetadata()
             'description' => null,
             'keywords' => null,
             'robots' => null,
+            'title' => null,
             'name' => 'test_value',
             'html_encoded' => '<title><span class="test">Test</span></title>',
         ];