MC-33884: De-couple Braintree payment method integration from core in 2.4.0

- Replaced object manager instantiation in tests

Author: svera

dev/tests/integration/testsuite/Magento/ConfigurableProduct/_files/product_configurable.php

@@ -23,7 +23,7 @@
 
 /** @var ProductRepositoryInterface $productRepository */
 $productRepository = Bootstrap::getObjectManager()
-    ->create(ProductRepositoryInterface::class);
+    ->get(ProductRepositoryInterface::class);
 /** @var $installer CategorySetup */
 $installer = Bootstrap::getObjectManager()->create(CategorySetup::class);
 $eavConfig = Bootstrap::getObjectManager()->get(Config::class);