[FrameworkBundle] Remove custom handler for Workflow listener attributes

[GromNaN]

Q	A
Branch?	7.1
Bug fix?	no
New feature?	no
Deprecations?	no
Issues	-
License	MIT

All the Workflow\Attribute\As*Listener classes extend AsEventListener. Since the attribute handler are now applied to child classes (#54365), it's no longer necessary to declare an attribute handler for each attribute.

Discussed in #54365 (comment)

[GromNaN]

This closure was identical to AsEventListener, except this exception message.

symfony/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

Lines 663 to 672 in e11d75c

	$container->registerAttributeForAutoconfiguration(AsEventListener::class, static function (ChildDefinition $definition, AsEventListener $attribute, \ReflectionClass|\ReflectionMethod $reflector) {
	$tagAttributes = get_object_vars($attribute);
	if ($reflector instanceof \ReflectionMethod) {
	if (isset($tagAttributes['method'])) {
	throw new LogicException(sprintf('AsEventListener attribute cannot declare a method on "%s::%s()".', $reflector->class, $reflector->name));
	}
	$tagAttributes['method'] = $reflector->getName();
	}
	$definition->addTag('kernel.event_listener', $tagAttributes);
	});

[nicolas-grekas]

Thank you @GromNaN.