Rename $user to $userComponent

Checking user component was overwriting the method parameter with the same name `$user`.

Author: warkadiuszz

src/Codeception/Lib/Connector/Yii2.php

@@ -133,8 +133,8 @@ public function resetApplication(bool $closeSession = true): void
     public function findAndLoginUser(int|string|IdentityInterface $user): void
     {
         $app = $this->getApplication();
-        $user = $app->get('user');
-        if (!$user instanceof User) {
+        $userComponent = $app->get('user');
+        if (!$userComponent instanceof User) {
             throw new ConfigurationException('The user component is not configured');
         }