bug #33626 [PropertyInfo] ensure compatibility with type resolver 0.5…

… (xabbuh)

This PR was merged into the 3.4 branch.

Discussion
----------

[PropertyInfo] ensure compatibility with type resolver 0.5

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

same as #33588 but for the `3.4` branch

Commits
-------

2d708b3 ensure compatibility with type resolver 0.5

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

@@ -55,7 +55,14 @@ public function getTypes(DocType $varType)
 
         $varTypes = [];
         for ($typeIndex = 0; $varType->has($typeIndex); ++$typeIndex) {
-            $varTypes[] = (string) $varType->get($typeIndex);
+            $nestedVarType = $varType->get($typeIndex);
+
+            if ($nestedVarType instanceof Nullable) {
+                $varTypes[] = (string) $nestedVarType->getActualType();
+                $nullable = true;
+            } else {
+                $varTypes[] = (string) $nestedVarType;
+            }
         }
 
         // If null is present, all types are nullable