[Zend\Loader] AutoloaderFactory should not register default StandardAutoloader as fallback
[Zend\Loader] AutoloaderFactory should not register default StandardAutoloader as fallback

This causes some useless processing and shouldn't be required in standard
setups. If users need to set it to act as a fallback autoloader, they can still
do so.

zendframework/zend-loader,Maks3w/zend-loader