Handle Instance value during '__construct()' analysis

See https://github.com/yiisoft/yii2/blob/76d6345e85c05fa874f1cefdeac94a40d9dcaa39/framework/di/Container.php#L589.

`__construct()` value might be an `yii\di\Instance` instance and it should be resolved into its type:

```php
Yii::createObject([
    '__class' => MyClass::class,
    '__construct()' => [
        'request' => Instance::of(\yii\web\Request::class),
    ],
]);
```