File injection on load not working reliabely with lazy ghost objects

[wryk]

Bug Report

Q	A
BC Break	yes
Bundle version	2.3.0
Symfony version	6.4.3
PHP version	8.2.13

Summary

inject_on_load option doesn't work as previously expected when doctrine use lazy ghost objects (since doctrine/orm 3.0.0 or below when enabling them).

According to doctrine/DoctrineBundle#1651 (comment) this might be an expected behavior of the new proxy internal (and might wontfix in doctrine) so this is why I address this issue here.

Current behavior

When accessing the file object on a uninitialized entity the file is not injected.

How to reproduce

• Enable doctrine lazy ghost objects
• Enable inject_on_load
• Access the file object on a uninitialized entity

Reproducible example : https://github.com/wryk/vich-uploader-issue-1439-lazy-ghost-inject-load

Expected behavior

Without lazy ghost objects the injection worked fine, I expect the inject_on_load to work without having to ensure the entity is not a proxy or is initialized.

If not practically fixable in the bundle this regression should be documented or maybe because of the reliability issue inject_on_load should be replaced/removed.