minor #33291 [Form][PropertyPathMapper] Avoid extra call to get confi…

…g (fancyweb)

This PR was merged into the 3.4 branch.

Discussion
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[Form][PropertyPathMapper] Avoid extra call to get config

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

3e2aada [Form][PropertyPathMapper] Avoid extra call to get config

src/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php

@@ -48,7 +48,7 @@ public function mapDataToForms($data, $forms)
             if (!$empty && null !== $propertyPath && $config->getMapped()) {
                 $form->setData($this->propertyAccessor->getValue($data, $propertyPath));
             } else {
-                $form->setData($form->getConfig()->getData());
+                $form->setData($config->getData());
             }
         }
     }