minor #22673 [Form] Minor: Fix comment in ChoiceType (issei-m)

This PR was merged into the 2.7 branch.

Discussion
----------

[Form] Minor: Fix comment in ChoiceType

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no <!-- don't forget updating UPGRADE-*.md files -->
| Tests pass?   | n/a
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

Forgotten to be updated in: #21957

Commits
-------

a49d79c856 [Form] Minor: Fix comment in ChoiceType

src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php

@@ -162,7 +162,7 @@ class ChoiceType extends AbstractType
         }
 
         // To avoid issues when the submitted choices are arrays (i.e. array to string conversions),
-        // we have to ensure that all elements of the submitted choice data are strings or null.
+        // we have to ensure that all elements of the submitted choice data are NULL, strings or ints.
         $builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) {
             $data = $event->getData();