Allow `EntityNotFinalRule` to be turned off when on Doctrine ORM 3.4 + PHP 8.4

[ruudk]

With Doctrine ORM 3.4.0 now supporting native Lazy Objects introduced in PHP 8.4 there is no need for the EntityNotFinalRule anymore (introduced in #202)

The new functionality needs to be manually enabled on the Doctrine ORM Configuration using isNativeLazyObjectsEnabled:
https://github.com/doctrine/orm/blob/3272e1c0af1fe1db037191848e556bc1d4b7cdbb/src/Configuration.php#L598

When using Symfony, one needs to enable enable_native_lazy_objects on the Doctrine ORM configuration.

Would it be an idea to introduce a parameter that has a default value set to true, to toggle this rule?

That way, people can disable the rule.

Maybe when the feature is enabled by default in a next version of Doctrine, the rule can be removed completely. Or disabled by default, in a next major of this extension.

/cc @LeoVie @ondrejmirtes

[ruudk]

Easiest for now is to ignore doctrine.finalEntity errors.