Fixes #3358: Removed automatic CSRF meta tag generation by View. Added Html::csrfMetaTags() and its call to main layout files

extensions/apidoc/templates/bootstrap/layouts/main.php

@@ -30,6 +30,7 @@ $this->beginPage();
     <meta charset="<?= Yii::$app->charset ?>"/>
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <meta name="language" content="en" />
+    <?= Html::csrfMetaTags() ?>
     <?php $this->head() ?>
     <title><?= Html::encode($this->context->pageTitle) ?></title>
 </head>