Merge branch '7.2' into 7.3

* 7.2:
  fix EmojiTransliterator return type compatibility with PHP 8.5
  Bump Symfony version to 7.2.7
  Update VERSION for 7.2.6
  Update CHANGELOG for 7.2.6
  Bump Symfony version to 6.4.22
  Update VERSION for 6.4.21
  Update CONTRIBUTORS for 6.4.21
  Update CHANGELOG for 6.4.21
  Fix return type is non-nullable
  Fix overwriting an array element

Author: xabbuh

Extension/Core/Type/WeekType.php

@@ -39,7 +39,6 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
         } else {
             $yearOptions = $weekOptions = [
                 'error_bubbling' => true,
-                'empty_data' => '',
             ];
             // when the form is compound the entries of the array are ignored in favor of children data
             // so we need to handle the cascade setting here

Tests/Fixtures/TestExtension.php

@@ -34,7 +34,7 @@ public function addType(FormTypeInterface $type)
 
     public function getType($name): FormTypeInterface
     {
-        return $this->types[$name] ?? null;
+        return $this->types[$name];
     }
 
     public function hasType($name): bool