Merge branch '5.4' into 6.0

* 5.4: (27 commits)
  feat: add completion for DebugAutowiring search argument
  [Routing] Add support for aliasing routes
  [DependencyInjection] only allow `ReflectionNamedType` for `ServiceSubscriberTrait`
  Fix CS
  [Console] Open CompleteCommand for custom outputs
  [Intl] Update the ICU data to 70.1
  [Messenger] Add completion for failed messages commands.
  Fix tests
  Fixing missing full_stack variable that's needed by toolbar.html.twig
  [PropertyInfo] Bump phpstan/phpdoc-parser
  [Security] Backport type fixes
  [VarExporter] escape unicode chars involved in directionality
  [Framework] Add completion to debug:container
  [Messenger] Add completion to command messenger:consume
  [Intl] Update the ICU data to 70.1
  Fix more generic types
  Default access_decision_manager.strategy option with merge.
  Fix typos
  Update validators.ca.xlf
  Add missing Validator translations for Estonian
  ...

Signed-off-by: Alexander M. Turek <me@derrabus.de>

Author: derrabus

Tests/PipeStdinInStdoutStdErrStreamSelect.php

@@ -34,7 +34,7 @@
         exit(ERR_TIMEOUT);
     }
 
-    if (in_array(\STDOUT, $w) && strlen($out) > 0) {
+    if (in_array(\STDOUT, $w) && '' !== $out) {
         $written = fwrite(\STDOUT, (string) $out, 32768);
         if (false === $written) {
             exit(ERR_WRITE_FAILED);
@@ -45,7 +45,7 @@
         $write = array_diff($write, [\STDOUT]);
     }
 
-    if (in_array(\STDERR, $w) && strlen($err) > 0) {
+    if (in_array(\STDERR, $w) && '' !== $err) {
         $written = fwrite(\STDERR, (string) $err, 32768);
         if (false === $written) {
             exit(ERR_WRITE_FAILED);