Merge branch '6.4' into 7.0

* 6.4:
  Partially revert "DX: PHP CS Fixer - update excluded paths and apply some minor CS"
  [AssetMapper] Allowing for files to be written to some non-local location
  [HttpKernel] Resolve EBADP error on flock with LOCK_SH with NFS
  [AssetMapper] Fixing bug of bad parsing of imports when an import then export are adjacent
  add missing basque translations
  [FrameworkBundle][Validator] Allow implementing validation groups provider outside DTOs
  [Notifier][Novu] Implement overrides
  [Validator] Handle `null` case
  [Workflow] List place or transition listeners in profiler
  [Intl] Add support for emoji 15.1
  Replace Tickets by Issues
  [Validator] Add missing arabic translations
  [Validator] Added missing translations for Romanian language for Validator component
  [Messenger] Fix graceful exit with ids
  [HttpKernel] Add parameters `kernel.runtime_mode` and `kernel.runtime_mode.*`, all set from env var `APP_RUNTIME_MODE`

Author: nicolas-grekas

Internal/BasicErrorHandler.php

@@ -22,7 +22,7 @@ public static function register(bool $debug): void
     {
         error_reporting(-1);
 
-        if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
+        if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true)) {
             ini_set('display_errors', $debug);
         } elseif (!filter_var(\ini_get('log_errors'), \FILTER_VALIDATE_BOOL) || \ini_get('error_log')) {
             // CLI - display errors only if they're not already logged to STDERR

Runner/Symfony/HttpKernelRunner.php

@@ -12,7 +12,9 @@
 namespace Symfony\Component\Runtime\Runner\Symfony;
 
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpKernel\Kernel;
 use Symfony\Component\HttpKernel\TerminableInterface;
 use Symfony\Component\Runtime\RunnerInterface;
 
@@ -31,7 +33,21 @@ public function __construct(
     public function run(): int
     {
         $response = $this->kernel->handle($this->request);
-        $response->send(!$this->debug);
+
+        if (Kernel::VERSION_ID >= 60400) {
+            $response->send(false);
+
+            if (\function_exists('fastcgi_finish_request') && !$this->debug) {
+                fastcgi_finish_request();
+            } elseif (\function_exists('litespeed_finish_request') && !$this->debug) {
+                litespeed_finish_request();
+            } else {
+                Response::closeOutputBuffers(0, true);
+                flush();
+            }
+        } else {
+            $response->send();
+        }
 
         if ($this->kernel instanceof TerminableInterface) {
             $this->kernel->terminate($this->request, $response);