Fix #18859: Fix yii\web\Controller::bindInjectedParams() to not throw error when argument of ReflectionUnionType type is passed

tests/framework/web/FakePhp80Controller.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * @link https://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license https://www.yiiframework.com/license/
+ */
+
+namespace yiiunit\framework\web;
+
+use yii\web\Controller;
+
+class FakePhp80Controller extends Controller
+{
+    public $enableCsrfValidation = false;
+
+    public function actionInjection(int|string $arg, int|string $second)
+    {
+
+    }
+}