Enable attaching an entity listener without specifying an event

[HypeMC]

Requires doctrine/orm#10122

Currently, when registering an entity listener the event name needs to be specified, eg:

use Doctrine\Bundle\DoctrineBundle\Attribute\AsEntityListener;
use Doctrine\ORM\Events;

#[AsEntityListener(event: Events::prePersist, entity: MyEntity::class)]
final class MyEntityListener
{}

If the event is not specified, it's not registered. This is because of the following check:

DoctrineBundle/DependencyInjection/Compiler/EntityListenerPass.php

Lines 56 to 58 in 23c23c7

	if (isset($attributes['entity']) && isset($attributes['event'])) {
	$this->attachToListener($container, $name, $this->getConcreteDefinitionClass($container->findDefinition($id), $container, $id), $attributes);
	}

However, when the EntityListeners attribute is used the events get read from the listener class by matching the method names to the names of possible events, eg:

use Doctrine\ORM\Mapping as ORM;

#[ORM\Entity]
#[ORM\EntityListeners([MyEntityListener::class])]
class MyEntity
{}

The following code is triggers this behavior:

https://github.com/doctrine/orm/blob/06c77cebb5aa7ee3cb57f8cc0d2224538de154d7/lib/Doctrine/ORM/Mapping/Driver/AnnotationDriver.php#L527-L529

The problem with this approach is that it's not very intuitive since the configuration is split across multiple files making it hard to use.

With this PR, the events will attempt to be auto-mapped in the AttachEntityListenersListener if null is passed as the event name (see doctrine/orm#10122), eg:

use Doctrine\Bundle\DoctrineBundle\Attribute\AsEntityListener;

#[AsEntityListener(entity: MyEntity::class)]
final class MyEntityListener
{}

[ostrolucky]

thx!