minor symfony#53273 [Validator] Fix listing encodings in CharsetValidator (nicolas-grekas)

This PR was merged into the 7.1 branch.

Discussion
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[Validator] Fix listing encodings in CharsetValidator

| Q             | A
| ------------- | ---
| Branch?       | 7.1
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

Forgotten in symfony#53256

Commits
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7e413ff [Validator] Fix listing encodings in CharsetValidator

Author: nicolas-grekas

src/Symfony/Component/Validator/Constraints/CharsetValidator.php

@@ -38,7 +38,7 @@ public function validate(mixed $value, Constraint $constraint): void
         if (!\in_array($detected = mb_detect_encoding($value, $constraint->encodings, true), $constraint->encodings, true)) {
             $this->context->buildViolation($constraint->message)
                 ->setParameter('{{ detected }}', $detected)
-                ->setParameter('{{ encodings }}', implode('", "', $constraint->encodings))
+                ->setParameter('{{ encodings }}', implode(', ', $constraint->encodings))
                 ->setCode(Charset::BAD_ENCODING_ERROR)
                 ->addViolation();
         }