Merge branch '6.0' into 6.1

* 6.0:
  Exclude from baseline generation deprecations triggered in legacy test
  [HttpFoundation] Update "[Session] Overwrite invalid session id" to only validate when files session storage is used
  [DoctrineBridge] Add missing break
  [PropertyInfo] CS fix
  [Serializer] Try all possible denormalization route with union types when ALLOW_EXTRA_ATTRIBUTES=false
  CS fix
  [Cache] Respect $save option in ChainAdapter
  [ExpressionLanguage] fix tests (bis)
  [ExpressionLanguage] fix tests
  Allow passing null in twig_is_selected_choice
  [Cache] Respect $save option in ArrayAdapter
  [HttpKernel] Disable session tracking while collecting profiler data
  [MonologBridge] Fixed support of elasticsearch 7.+ in ElasticsearchLogstashHandler
  [DoctrineBridge] Extend type guessing on enum fields
  [FrameworkBundle] Lower JsonSerializableNormalizer priority
  [Messenger] move resetting services at worker stopped into ResetServicesListener
  [Mailer] Fix Error Handling for OhMySMTP Bridge
  Fix for missing sender name in case with usage of the EnvelopeListener

Author: nicolas-grekas

Extension/FormExtension.php

@@ -191,7 +191,7 @@ private function createFieldTranslation(?string $value, array $parameters, strin
  *
  * @see ChoiceView::isSelected()
  */
-function twig_is_selected_choice(ChoiceView $choice, string|array $selectedValue): bool
+function twig_is_selected_choice(ChoiceView $choice, string|array|null $selectedValue): bool
 {
     if (\is_array($selectedValue)) {
         return \in_array($choice->value, $selectedValue, true);