Improve code quality

Author: kandy

app/code/Magento/Catalog/Model/Indexer/Category/Product/AbstractAction.php

@@ -15,6 +15,7 @@
 use Magento\Framework\EntityManager\MetadataPool;
 use Magento\Store\Model\Store;
 
+// phpcs:disable Magento2.Classes.AbstractApi
 /**
  * Class AbstractAction
  *

app/code/Magento/Catalog/Model/ResourceModel/Product.php

@@ -227,6 +227,9 @@ public function getWebsiteIds($product)
      */
     public function getWebsiteIdsByProductIds($productIds)
     {
+        if (!is_array($productIds) || empty($productIds)) {
+            return [];
+        }
         $select = $this->getConnection()->select()->from(
             $this->getProductWebsiteTable(),
             ['product_id', 'website_id']