minor #32046 [FrameworkBundle] Unconditionally register the DateInter…

…valNormalizer (ogizanagi)

This PR was merged into the 4.2 branch.

Discussion
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[FrameworkBundle] Unconditionally register the DateIntervalNormalizer

| Q             | A
| ------------- | ---
| Branch?       | 4.2 <!-- see below -->
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | N/A   <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | N/A

Fwb conflicts with serializer <4.2 https://github.com/symfony/symfony/blob/37fa45bbd1553ee5ce6efdb79bd003b7327f7376/src/Symfony/Bundle/FrameworkBundle/composer.json#L74

so we can remove this obsolete condition from the extension (DateIntervalNormalizer exists since 3.4).

Commits
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c7cc780 [FrameworkBundle] Unconditionally register the DateIntervalNormalizer

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

@@ -89,7 +89,6 @@
 use Symfony\Component\Serializer\Mapping\ClassDiscriminatorFromClassMetadata;
 use Symfony\Component\Serializer\Mapping\Factory\CacheClassMetadataFactory;
 use Symfony\Component\Serializer\Normalizer\ConstraintViolationListNormalizer;
-use Symfony\Component\Serializer\Normalizer\DateIntervalNormalizer;
 use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use Symfony\Component\Stopwatch\Stopwatch;
@@ -1316,10 +1315,6 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
     {
         $loader->load('serializer.xml');
 
-        if (!class_exists(DateIntervalNormalizer::class)) {
-            $container->removeDefinition('serializer.normalizer.dateinterval');
-        }
-
         if (!class_exists(ConstraintViolationListNormalizer::class)) {
             $container->removeDefinition('serializer.normalizer.constraint_violation_list');
         }

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -1102,10 +1102,6 @@ public function testDataUriNormalizerRegistered()
 
     public function testDateIntervalNormalizerRegistered()
     {
-        if (!class_exists(DateIntervalNormalizer::class)) {
-            $this->markTestSkipped('The DateIntervalNormalizer has been introduced in the Serializer Component version 3.4.');
-        }
-
         $container = $this->createContainerFromFile('full');
 
         $definition = $container->getDefinition('serializer.normalizer.dateinterval');