DDC-3643: [GH-1352] fix EntityGenerator RegenerateEntityIfExists

[doctrinebot]

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of Fedik:

Url: #1352

Message:

Fix for Class generator,
when class already exists and $generator->setRegenerateEntityIfExists(true);

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1352] was labeled:
#1352

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1352] was merged:
#1352

[doctrinebot]

Issue was closed with resolution "Fixed"