Untitled

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">+
   <body>
        <referenceBlock name="product_additional_data">
            <arguments>
                <argument name="view_model" xsi:type="object">CustomProductModelViewModelLocaleInfo</argument>
            </arguments>
        </referenceBlock>
     </body>
</page>

use MagentoFrameworkViewElementBlockArgumentInterface;
use MagentoFrameworkAppConfigScopeConfigInterface;
use MagentoFrameworkLocaleResolver as LocaleResolver;
use MagentoStoreModelScopeInterface;

class LocaleInfo implements ArgumentInterface
{
    protected $scopeConfig;
    protected $localeResolver;

    public function __construct(
        ScopeConfigInterface $scopeConfig,
        LocaleResolver $localeResolver
    ) {
        $this->scopeConfig = $scopeConfig;
        $this->localeResolver = $localeResolver;
    }

    public function getCodes($storeId = null)
    {
        $configPath = $this->localeResolver->getDefaultLocalePath();
        $localeCode = $this->scopeConfig->getValue($configPath, ScopeInterface::SCOPE_STORE, $storeId);

        return $localeCode;
    }
}

$myViewModel = $block->getViewModel();
echo $myViewModel->getCodes();

<block class="MagentoReviewBlockProductViewListView"
       name="product.info.product_additional_data"
       as="product_additional_data"
       template="Magento_Review::product/view/list.phtml"
/>

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">+
   <body>
        <referenceBlock name="product.info.product_additional_data">
            <arguments>
                <argument name="view_model" xsi:type="object">CustomProductModelViewModelLocaleInfo</argument>
            </arguments>
        </referenceBlock>
     </body>
</page>