Mitigate performance issue in #36667 during price indexing

app/code/Magento/CatalogInventory/Model/Plugin/ProductLinks.php

@@ -13,29 +13,22 @@
 
 class ProductLinks
 {
-    /**
-     * @var Configuration
-     */
-    private $configuration;
-
-    /**
-     * @var Stock
-     */
-    private $stockHelper;
 
     /**
      * ProductLinks constructor.
      *
      * @param Configuration $configuration
      * @param Stock $stockHelper
      */
-    public function __construct(Configuration $configuration, Stock $stockHelper)
-    {
-        $this->configuration = $configuration;
-        $this->stockHelper = $stockHelper;
+    public function __construct(
+        private readonly Configuration $configuration,
+        private readonly Stock $stockHelper
+    ) {
     }
 
     /**
+     * Fixes simple products are shown as associated in grouped when set out of stock
+     *
      * @param Link $subject
      * @param Collection $collection
      * @return Collection
@@ -44,7 +37,7 @@ public function __construct(Configuration $configuration, Stock $stockHelper)
     public function afterGetProductCollection(Link $subject, Collection $collection)
     {
         if ($this->configuration->isShowOutOfStock() != 1) {
-            $this->stockHelper->addInStockFilterToCollection($collection);
+            $this->stockHelper->addIsInStockFilterToCollection($collection);
         }
         return $collection;
     }

app/code/Magento/CatalogInventory/Test/Unit/Model/Plugin/ProductLinksTest.php

@@ -52,7 +52,7 @@ public function testAfterGetProductCollectionShow($status, $callCount)
         $this->configMock->expects($this->once())->method('isShowOutOfStock')->willReturn($status);
         $this->stockHelperMock
             ->expects($this->exactly($callCount))
-            ->method('addInStockFilterToCollection')
+            ->method('addIsInStockFilterToCollection')
             ->with($collectionMock);
 
         $this->assertEquals($collectionMock, $this->model->afterGetProductCollection($subjectMock, $collectionMock));