Merge branch '4.4'

* 4.4:
  [Config] Disable default alphabet sorting in glob function due of unstable sort
  [HttpClient] always return the empty string when the response cannot have a body
  [TwigBundle][exception] Added missing css variable to highlight line in trace
  [Serializer] Improve messages for unexpected resources values
  [SecurityBundle] correct types for default arguments for firewall configs

Author: nicolas-grekas

Tests/DependencyInjection/ConfigurationTest.php

@@ -418,6 +418,7 @@ class_exists(SemaphoreStore::class) && SemaphoreStore::isSupported() ? 'semaphor
                 'texter_transports' => [],
                 'channel_policy' => [],
                 'admin_recipients' => [],
+                'notification_on_failed_messages' => false,
             ],
             'error_controller' => 'error_controller',
             'secrets' => [