minor symfony#52855 [FrameworkBundle] Fix tests (nicolas-grekas)

This PR was merged into the 6.4 branch.

Discussion
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[FrameworkBundle] Fix tests

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

Needed after symfony#52852

Commits
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e8c6709 [FrameworkBundle] Fix tests

Author: nicolas-grekas

src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/Serializer/config.yml

@@ -3,6 +3,7 @@ imports:
 
 framework:
     http_method_override: false
+    translator: true
     serializer:
         enabled: true
         default_context: