[CodeQuality] Handle crash on native "object" type on TypeWillReturnCallableArrowFunctionRector

[samsonasik]

It currently got error:

There was 1 error:

1) Rector\PHPUnit\Tests\CodeQuality\Rector\Class_\TypeWillReturnCallableArrowFunctionRector\TypeWillReturnCallableArrowFunctionRectorTest::test with data set #2 ('/Users/samsonasik/www/rector-...hp.inc')
Error: Call to undefined method PHPStan\Type\ObjectWithoutClassType::getClassReflection()

/Users/samsonasik/www/rector-phpunit/rules/CodeQuality/Reflection/MethodParametersAndReturnTypesResolver.php:68

[samsonasik]

All checks have passed 🎉 @TomasVotruba I am merging it to have faster feedback to test ;)