Merge branch '4.4' into 5.0

* 4.4: (28 commits)
  bug #34554 [HttpClient] Fix early cleanup of pushed HTTP/2 responses (lyrixx)
  Fix tests
  [Console] Fix commands description with numeric namespaces
  [HttpFoundation] Fixed typo
  [DI] Skip unknown method calls for factories in check types pass
  [EventDispatcher] Better error reporting when arguments to dispatch() are swapped
  improve upgrade instructions for twig.exception_controller configuration
  [HttpFoundation] Update CHANGELOG for PdoSessionHandler BC BREAK in 4.4
  [Serializer] CsvEncoder::NO_HEADERS_KEY ignored when used in constructor
  [Form] Keep preferred_choices order for choice groups
  [Debug] work around failing chdir() on Darwin
  [PhpUnitBridge] Read configuration CLI directive
  [DI] Missing test on YamlFileLoader
  Revert "minor #34608 [Process] add tests for php executable finder if file does not exist (ahmedash95)"
  Simpler example for Apache basic auth workaround
  [Console] Fix trying to access array offset on value of type int
  [Config] Remove extra sprintf arg
  [HttpKernel] fix typo
  [HttpKernel] Support typehint to deprecated FlattenException in controller
  Add preview mode support for Html and Serializer error renderers
  ...

Author: nicolas-grekas

Dumper/ContextProvider/SourceContextProvider.php

@@ -52,8 +52,8 @@ public function getContext(): ?array
                 && 'dump' === $trace[$i]['function']
                 && VarDumper::class === $trace[$i]['class']
             ) {
-                $file = $trace[$i]['file'];
-                $line = $trace[$i]['line'];
+                $file = $trace[$i]['file'] ?? $file;
+                $line = $trace[$i]['line'] ?? $line;
 
                 while (++$i < $this->limit) {
                     if (isset($trace[$i]['function'], $trace[$i]['file']) && empty($trace[$i]['class']) && 0 !== strpos($trace[$i]['function'], 'call_user_func')) {