ENGCOM-4724: magento2-22238: removed backward incompatible change fro…

…m the options… #22267

 - Merge Pull Request #22267 from VitaliyBoyko/magento2:magento-2.2-#22238-remove-backward-incompatible-change
 - Merged commits:
   1. 179bedf

app/code/Magento/Catalog/Block/Product/View/Options/Type/Select.php

@@ -59,7 +59,7 @@ public function __construct(
      *
      * @return string
      */
-    public function getValuesHtml(): string
+    public function getValuesHtml()
     {
         $option = $this->getOption();
         $optionType = $option->getType();