Merge branch '5.0' into 5.1

* 5.0:
  [VarDumper] fix typo
  Fix support for PHP8 union types
  [FrameworkBundle] preserve dots in query-string when redirecting
  [3.4] Fix support for PHP8 union types
  [PhpUnitBridge] Streamline ansi/no-ansi of composer according to phpunit --colors option
  [3.4] Small update in our internal terminology
  [Cache] fix compat with DBAL v3
  [HttpClient] Convert CurlHttpClient::handlePush() to instance method
  [VarDumper] Fix CliDumper coloration
  [DI] tighten detection of local dirs to prevent false positives
  [FrameworkBundle] preserve dots in query-string when redirecting
  Fix precendence in 4.4
  bumped Symfony version to 3.4.43
  updated VERSION for 3.4.42
  update CONTRIBUTORS for 3.4.42
  updated CHANGELOG for 3.4.42

Author: nicolas-grekas

OptionsResolver.php

@@ -206,7 +206,7 @@ public function setDefault(string $option, $value)
                 return $this;
             }
 
-            if (isset($params[0]) && null !== ($type = $params[0]->getType()) && self::class === $type->getName() && (!isset($params[1]) || (null !== ($type = $params[1]->getType()) && Options::class === $type->getName()))) {
+            if (isset($params[0]) && null !== ($type = $params[0]->getType()) && self::class === $type->getName() && (!isset($params[1]) || (($type = $params[1]->getType()) instanceof \ReflectionNamedType && Options::class === $type->getName()))) {
                 // Store closure for later evaluation
                 $this->nested[$option][] = $value;
                 $this->defaults[$option] = [];
@@ -1283,7 +1283,7 @@ private function formatOptions(array $options): string
 
     private function getParameterClassName(\ReflectionParameter $parameter): ?string
     {
-        if (!($type = $parameter->getType()) || $type->isBuiltin()) {
+        if (!($type = $parameter->getType()) instanceof \ReflectionNamedType || $type->isBuiltin()) {
             return null;
         }