bug symfony#53350 [Validator] fix the exception being thrown (xabbuh)

This PR was merged into the 5.4 branch.

Discussion
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[Validator] fix the exception being thrown

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

An `UnexpectedValueException` is caught and transformed into a violation (`UnexpectedTypeException` indicates a misconfiguration of a constraint and is not caught).

see also symfony#27917

Commits
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3a8f10b fix the exception being thrown

Author: chalasr

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

@@ -14,6 +14,7 @@
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\ConstraintValidator;
 use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+use Symfony\Component\Validator\Exception\UnexpectedValueException;
 
 /**
  * @author Imad ZAIRIG <[email protected]>
@@ -34,7 +35,7 @@ public function validate($value, Constraint $constraint)
         }
 
         if (!\is_scalar($value) && !(\is_object($value) && method_exists($value, '__toString'))) {
-            throw new UnexpectedTypeException($value, 'string');
+            throw new UnexpectedValueException($value, 'string');
         }
 
         $value = (string) $value;