Merge branch '3.4' into 4.4

* 3.4:
  [Cache] fix catching auth errors
  Fix CS
  [FrameworkBundle] set default session.handler alias if handler_id is not provided
  Fix CS
  Readability update
  Fix checks for phpunit releases on Composer 2 (resolves #37601)
  [SCA] Minor fixes on tests

Author: nicolas-grekas

bin/simple-phpunit.php

@@ -196,7 +196,11 @@
         'requires' => ['php' => '*'],
     ];
 
-    if (1 === count($info['versions'])) {
+    $stableVersions = array_filter($info['versions'], function($v) {
+        return !preg_match('/-dev$|^dev-/', $v);
+    });
+
+    if (!$stableVersions) {
         $passthruOrFail("$COMPOSER create-project --ignore-platform-reqs --no-install --prefer-dist --no-scripts --no-plugins --no-progress -s dev phpunit/phpunit $PHPUNIT_VERSION_DIR \"$PHPUNIT_VERSION.*\"");
     } else {
         $passthruOrFail("$COMPOSER create-project --ignore-platform-reqs --no-install --prefer-dist --no-scripts --no-plugins --no-progress phpunit/phpunit $PHPUNIT_VERSION_DIR \"$PHPUNIT_VERSION.*\"");