MC-31920: Let Magento\Framework\Lock\Backend\Database have 2 locks in single connection

- Rollback changes as DummyLocker is now primary lock manager instead of DB lock manager for integration tests;

Author: adifucan

dev/tests/integration/testsuite/Magento/Store/App/Config/Source/InitialConfigSourceTest.php

@@ -70,6 +70,7 @@ protected function setUp()
         $this->config = $this->loadConfig();
         $this->envConfig = $this->loadEnvConfig();
         $this->loadDumpConfig();
+        $this->storeManager->reinitStores();
     }
 
     /**
@@ -99,8 +100,6 @@ public function testGetWebsites(array $websites, string $defaultWebsite, bool $o
             // remove application environment config for emulate work without db
             $this->clearConfig(ConfigFilePool::APP_ENV);
         }
-        // reinit stores to get correct updated config
-        $this->storeManager->reinitStores();
         $this->assertEquals($defaultWebsite, $this->storeManager->getWebsite()->getCode());
         $this->assertEquals($websites, array_keys($this->storeManager->getWebsites(true, true)), '', 0.0, 10, true);
     }