minor symfony#61186 [FrameworkBundle] Don't use Email::VALIDATION_MODES in Configuration (nicolas-grekas)

This PR was merged into the 6.4 branch.

Discussion
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[FrameworkBundle] Don't use Email::VALIDATION_MODES in Configuration

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

The config has to independent of optional deps, thus the fallback path is the only path we should have.
The CI ensures we're in sync already.

Commits
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a7ff945 [FrameworkBundle] Don't use Email::VALIDATION_MODES in Configuration

Author: nicolas-grekas

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php

@@ -45,7 +45,6 @@
 use Symfony\Component\Serializer\Serializer;
 use Symfony\Component\Translation\Translator;
 use Symfony\Component\Uid\Factory\UuidFactory;
-use Symfony\Component\Validator\Constraints\Email;
 use Symfony\Component\Validator\Validation;
 use Symfony\Component\Webhook\Controller\WebhookController;
 use Symfony\Component\WebLink\HttpHeaderSerializer;
@@ -1067,7 +1066,7 @@ private function addValidationSection(ArrayNodeDefinition $rootNode, callable $e
                             ->validate()->castToArray()->end()
                         ->end()
                         ->scalarNode('translation_domain')->defaultValue('validators')->end()
-                        ->enumNode('email_validation_mode')->values(array_merge(class_exists(Email::class) ? Email::VALIDATION_MODES : ['html5-allow-no-tld', 'html5', 'strict'], ['loose']))->end()
+                        ->enumNode('email_validation_mode')->values(['html5', 'html5-allow-no-tld', 'strict', 'loose'])->end()
                         ->arrayNode('mapping')
                             ->addDefaultsIfNotSet()
                             ->fixXmlConfig('path')