Add test prepareElement's side effect in FormElementManagerFactory
 (in case of DiAbstractFactory inject mock object)
Fix FormElementManagerFactory fieldName side effect
remove @package
Merge branch 'hotfix/4366'

Close #4366
Fixes #3945
Merge pull request #4383 from noopable/patch-FormPrepare

ensure the wrapElements option in Zend\Form\Form::prepareElement
Merge branch 'hotfix/4383' into develop

Forward port #4383