…ection value type

* 7.4:
  Use `parentElement` to set the class attribute within the Symfony toolbar
  [Serializer] Fix nullable array constructor parameter overriding collection value type
  [TypeInfo] Fix resolving class const type

* 6.4:
  [HttpFoundation] Fix session cookie_lifetime not applied in mock session storage
  [Serializer] Fix denormalization of magic `__set` properties
  Add 'sms' to hostless schemes

* 7.4:
  [HttpFoundation] Fix session cookie_lifetime not applied in mock session storage
  [Validator] Fix test
  [Serializer] Fix denormalization of magic `__set` properties
  [Config] Fix NodeDefinition template to be covariant
  Add 'sms' to hostless schemes
  [Validator] Fix required options check when extending a constraint with a simplified constructor
  [Validator] Skip ExpressionLanguage requirement in When constraint for closure expressions
  [Cache] Add timeout and slot eviction to LockRegistry stampede prevention
  [Console] Fix OUTPUT_RAW corrupting binary content on Windows
  [Form] Fix session data contamination by non-serializable objects in form flow
  [Mime] Use shell_exec() instead of passthru() in FileBinaryMimeTypeGuesser
  [HttpClient] Fix streaming from CachingHttpClient
  [DoctrineBridge] Rename `_schema_subscriber_check` table to `schema_subscriber_check_` for Oracle compatibility
  [HttpClient] Fix CachingHttpClient compatibility with decorator clients on 304 responses
  [FrameworkBundle] Fix stale container after reboot in KernelTestCase
  [Form] Fix duplicate validation errors when ValidatorExtension is instantiated multiple times