Show some message when entity clone is done to the user that process is success

I've reviewed the changes made by @uttam that's working fine, but the return statement will not work because of the changes. So that, I update code and add the same logic inside the EntityCopyReferenceConfirm class from where the copyEntity function is called.

I'm attaching here the screenshot after the changes done.

Thanks !

Hello,
I have reviewed the issue and it is working as expected.
Thanks.