bug #39735 [Serializer] Rename normalize param (VincentLanglet)
bug #39735 [Serializer] Rename normalize param (VincentLanglet)

This PR was merged into the 4.4 branch.

Discussion
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[Serializer] Rename normalize param

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| License       | MIT

The ProblemNormalizer is the only one Normalizer which
- Use a different param name `$exception` instead of the one in the interface `$object`.
- Doesn't type check the param.

The first point lead to an unfixable error with Psalm when extending the ProblemNormalizer
- If the variable is named `$object` it does not match with the parent
- If the variable is named `$exception` it does not match with the interface

Commits
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7e6eee2789 Rename normalize param

symfony/Serializer,symfony/serializer