Code review changes

Author: Mohamed-Asar

app/code/Magento/CatalogInventory/Block/Plugin/ProductView.php

@@ -6,6 +6,7 @@
 namespace Magento\CatalogInventory\Block\Plugin;
 
 use Magento\CatalogInventory\Model\Product\QuantityValidator;
+use Magento\Framework\App\ObjectManager;
 
 class ProductView
 {
@@ -15,12 +16,14 @@ class ProductView
     private $productQuantityValidator;
 
     /**
-     * @param QuantityValidator $productQuantityValidator
+     * @param QuantityValidator|null $productQuantityValidator
      */
     public function __construct(
-        QuantityValidator $productQuantityValidator
+        QuantityValidator $productQuantityValidator = null
     ) {
-        $this->productQuantityValidator = $productQuantityValidator;
+        $this->productQuantityValidator = $productQuantityValidator ?: ObjectManager::getInstance()->get(
+            QuantityValidator::class
+        );
     }
 
     /**

app/code/Magento/CatalogInventory/Model/Product/QuantityValidator.php

@@ -11,40 +11,34 @@
 
 class QuantityValidator
 {
-    /**
-     * @var StockRegistryInterface
-     */
-    private $stockRegistry;
-
     /**
      * @param StockRegistryInterface $stockRegistry
      */
     public function __construct(
-        StockRegistryInterface $stockRegistry
+        private readonly StockRegistryInterface $stockRegistry
     ) {
-        $this->stockRegistry = $stockRegistry;
     }
 
     /**
      * To get quantity validators
      *
      * @param int $productId
-     * @param int $websiteId
+     * @param int|null $websiteId
      *
      * @return array
      */
-    public function getData($productId, $websiteId): array
+    public function getData(int $productId, int|null $websiteId): array
     {
         $stockItem = $this->stockRegistry->getStockItem($productId, $websiteId);
 
         $params = [];
         $validators = [];
-        $params['minAllowed'] = (float)$stockItem->getMinSaleQty();
+        $params['minAllowed'] =  $stockItem->getMinSaleQty();
         if ($stockItem->getMaxSaleQty()) {
-            $params['maxAllowed'] = (float)$stockItem->getMaxSaleQty();
+            $params['maxAllowed'] = $stockItem->getMaxSaleQty();
         }
         if ($stockItem->getQtyIncrements() > 0) {
-            $params['qtyIncrements'] = (float)$stockItem->getQtyIncrements();
+            $params['qtyIncrements'] = (float) $stockItem->getQtyIncrements();
         }
         $validators['validate-item-quantity'] = $params;
 

app/code/Magento/GroupedProduct/ViewModel/ValidateQuantity.php

@@ -16,37 +16,25 @@
  */
 class ValidateQuantity implements ArgumentInterface
 {
-    /**
-     * @var Json
-     */
-    private $serializer;
-
-    /**
-     * @var QuantityValidator
-     */
-    private $productQuantityValidator;
-
     /**
      * @param Json $serializer
      * @param QuantityValidator $productQuantityValidator
      */
     public function __construct(
-        Json $serializer,
-        QuantityValidator $productQuantityValidator,
+        private readonly Json $serializer,
+        private readonly QuantityValidator $productQuantityValidator,
     ) {
-        $this->serializer = $serializer;
-        $this->productQuantityValidator = $productQuantityValidator;
     }
 
     /**
      * To get the quantity validators
      *
      * @param int $productId
-     * @param int $websiteId
+     * @param int|null $websiteId
      *
      * @return string
      */
-    public function getQuantityValidators($productId, $websiteId): string
+    public function getQuantityValidators(int $productId, int|null $websiteId): string
     {
         return $this->serializer->serialize(
             array_merge(