bug symfony#59363 [VarDumper] Fix displaying closure's "this" from anonymous classes (nicolas-grekas)

This PR was merged into the 6.4 branch.

Discussion
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[VarDumper] Fix displaying closure's "this" from anonymous classes

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

Commits
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2fb7765 [VarDumper] Fix displaying closure's "this" from anonymous classes

Author: nicolas-grekas

src/Symfony/Component/VarDumper/Caster/CutStub.php

@@ -27,7 +27,7 @@ public function __construct(mixed $value)
         switch (\gettype($value)) {
             case 'object':
                 $this->type = self::TYPE_OBJECT;
-                $this->class = $value::class;
+                $this->class = get_debug_type($value);
 
                 if ($value instanceof \Closure) {
                     ReflectionCaster::castClosure($value, [], $this, true, Caster::EXCLUDE_VERBOSE);