bug #33588 [PropertyInfo] ensure compatibility with type resolver 0.5 (xabbuh)

This PR was merged into the 4.3 branch.

Discussion
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[PropertyInfo] ensure compatibility with type resolver 0.5

| Q             | A
| ------------- | ---
| Branch?       | 4.3
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

Commits
-------

4c70de6c8f ensure compatibility with type resolver 0.5

src/Symfony/Component/PropertyInfo/Util/PhpDocTypeHelper.php

@@ -64,6 +64,11 @@ final class PhpDocTypeHelper
                 continue;
             }
 
+            if ($type instanceof Nullable) {
+                $nullable = true;
+                $type = $type->getActualType();
+            }
+
             $varTypes[] = $type;
         }