feature #24330 [FrameworkBundle] register class metadata factory alias (xabbuh)

This PR was merged into the 3.4 branch.

Discussion
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[FrameworkBundle] register class metadata factory alias

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #24296
| License       | MIT
| Doc PR        |

Commits
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d0235a00cc register class metadata factory alias

Author: fabpot

Resources/config/serializer.xml

@@ -52,6 +52,8 @@
             <argument>null</argument>
         </service>
 
+        <service id="Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface" alias="serializer.mapping.class_metadata_factory" />
+
         <!-- Cache -->
         <service id="serializer.mapping.cache_warmer" class="Symfony\Bundle\FrameworkBundle\CacheWarmer\SerializerCacheWarmer">
             <argument type="collection" /><!-- Loaders injected by the extension -->