Merge branch '3.4' into 4.4

* 3.4:
  [Http Foundation] Fix clear cookie samesite
  [Security] Check if firewall is stateless before checking for session/previous session
  [Form] Support customized intl php.ini settings
  [Security] Remember me: allow to set the samesite cookie flag
  [Debug] fix for PHP 7.3.16+/7.4.4+
  [Validator] Backport translations
  Prevent warning in proc_open()

ErrorHandler.php

@@ -519,7 +519,7 @@ public function handleError(int $type, string $message, string $file, int $line)
         if ($this->isRecursive) {
             $log = 0;
         } else {
-            if (!\defined('HHVM_VERSION')) {
+            if (\PHP_VERSION_ID < (\PHP_VERSION_ID < 70400 ? 70316 : 70404)) {
                 $currentErrorHandler = set_error_handler('var_dump');
                 restore_error_handler();
             }
@@ -531,7 +531,7 @@ public function handleError(int $type, string $message, string $file, int $line)
             } finally {
                 $this->isRecursive = false;
 
-                if (!\defined('HHVM_VERSION')) {
+                if (\PHP_VERSION_ID < (\PHP_VERSION_ID < 70400 ? 70316 : 70404)) {
                     set_error_handler($currentErrorHandler);
                 }
             }

Tests/ErrorHandlerTest.php

@@ -363,8 +363,6 @@ public function testHandleDeprecation()
         $handler = new ErrorHandler();
         $handler->setDefaultLogger($logger);
         @$handler->handleError(E_USER_DEPRECATED, 'Foo deprecation', __FILE__, __LINE__, []);
-
-        restore_error_handler();
     }
 
     /**
@@ -618,6 +616,10 @@ public function errorHandlerWhenLoggingProvider(): iterable
 
     public function testAssertQuietEval()
     {
+        if ('-1' === ini_get('zend.assertions')) {
+            $this->markTestSkipped('zend.assertions is forcibly disabled');
+        }
+
         $ini = [
             ini_set('zend.assertions', 1),
             ini_set('assert.active', 1),