<type name="MagentoCatalogHelperProductView">
    <plugin name="Vendor_Module_LayoutMods" type="VendorModulePluginLayoutMod" />
</type>

<?php
namespace VendorModulePlugin;

class LayoutMod
{
  public function aroundinitProductLayout(
      MagentoCatalogHelperProductView $subject,
      callable $proceed,
      MagentoFrameworkViewResultPage $resultPage,
      $product,
      $params = null
  ) {

      $result = $proceed($resultPage, $product, $params);

      $resultPage->addPageLayoutHandles(['layout' => $product->getData('page_layout')], 'catalog_product_view');
      print_r($resultPage->getLayout()->getUpdate()->getHandles());

      return $result;

  }
}