Fix file names and final price retrieval

Author: avstudnitz

src/Cron/UpdateSale.php src/Cron/UpdateIsSale.phpsrc/Cron/UpdateSale.php renamed to src/Cron/UpdateIsSale.php

@@ -8,7 +8,6 @@
 use Magento\Catalog\Model\ResourceModel\Product as ProductResource;
 use Magento\Catalog\Model\ResourceModel\Product\Collection as ProductCollection;
 use Magento\Catalog\Model\ResourceModel\Product\CollectionFactory as ProductCollectionFactory;
-use Magento\Framework\Stdlib\DateTime\TimezoneInterface;
 use Magento\Store\Api\Data\StoreInterface;
 use Magento\Store\Model\StoreManagerInterface;
 
@@ -69,7 +68,7 @@ private function getProductsToCheck(StoreInterface $store): array
 
     private function isProductSale(ProductInterface $product): bool
     {
-        $finalPrice = (float)$product->getFinalPrice();
+        $finalPrice = (float)$product->getData('final_price');
         $originalPrice = (float)$product->getPrice();
         if (!$finalPrice || !$originalPrice) {
             return false;