bug #28508 [Form] forward false label option to nested types (xabbuh)

This PR was merged into the 2.8 branch.

Discussion
----------

[Form] forward false label option to nested types

| Q             | A
| ------------- | ---
| Branch?       | 2.8
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony/symfony#28469 (comment)
| License       | MIT
| Doc PR        |

This change does not fix any built-in Symfony form themes, but takes
into account the changes made in #28469 to allow third-party form themes
work properly.

Commits
-------

3247cdeea9 forward false label option to nested types

Author: nicolas-grekas

Extension/Core/Type/DateTimeType.php

@@ -121,6 +121,11 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 'invalid_message_parameters',
             )));
 
+            if (false === $options['label']) {
+                $dateOptions['label'] = false;
+                $timeOptions['label'] = false;
+            }
+
             if (null !== $options['date_widget']) {
                 $dateOptions['widget'] = $options['date_widget'];
             }