ENGCOM-8906: Update ListProduct.php #32389

 - Merge Pull Request #32389 from mamsincl/magento2:core_issue_32088
 - Merged commits:
   1. e5b3bb3
   2. b13fcbb

Author: magento-engcom-team

app/code/Magento/Catalog/Block/Product/ListProduct.php

@@ -461,7 +461,7 @@ private function initializeProductCollection()
             // if the product is associated with any category
             if ($categories->count()) {
                 // show products from this category
-                $this->setCategoryId(current($categories->getIterator())->getId());
+                $this->setCategoryId($categories->getIterator()->current()->getId());
             }
         }
 

app/code/Magento/Catalog/Test/Unit/Block/Product/ListProductTest.php

@@ -195,7 +195,7 @@ public function testGetIdentities()
 
         $this->catCollectionMock->expects($this->once())
             ->method('getIterator')
-            ->willReturn([$currentCategory]);
+            ->willReturn(new \ArrayIterator([$currentCategory]));
 
         $this->prodCollectionMock->expects($this->any())
             ->method('getIterator')