Merge branch '6.4' into 7.0

* 6.4:
  [Serializer] Improve exception message in UnwrappingDenormalizer
  [PropertyInfo] Update DoctrineExtractor for new DBAL 4 BIGINT type
  Update security.nl.xlf
  [Validator] IBAN Check digits should always between 2 and 98
  [Security] Populate translations for trans-unit 20
  add missing plural translation messages
  filter out empty HTTP header parts
  [String] Fix folded in compat mode
  Remove calls to `getMockForAbstractClass()`
  [ErrorHandler] Do not call xdebug_get_function_stack() with xdebug >= 3.0 when not in develop mode
  [Serializer] Fix type for missing property
  add test for JSON response with null as content
  [Filesystem] Fix dumpFile `stat failed` error hitting custom handler
  Return false in isTtySupported() when open_basedir restrictions prevent access to /dev/tty.
  Remove calls to `TestCase::iniSet()` and calls to deprecated methods of `MockBuilder`
  [PhpUnitBridge] Fix `DeprecationErrorHandler` with PhpUnit 10

Author: fabpot

Diff for: Tests/ApplicationTest.php

@@ -44,6 +44,7 @@
 use Symfony\Component\Console\SignalRegistry\SignalRegistry;
 use Symfony\Component\Console\Terminal;
 use Symfony\Component\Console\Tester\ApplicationTester;
+use Symfony\Component\Console\Tests\Fixtures\MockableAppliationWithTerminalWidth;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
@@ -932,7 +933,9 @@ public function testRenderExceptionEscapesLines()
 
     public function testRenderExceptionLineBreaks()
     {
-        $application = $this->getMockBuilder(Application::class)->addMethods(['getTerminalWidth'])->getMock();
+        $application = $this->getMockBuilder(MockableAppliationWithTerminalWidth::class)
+            ->onlyMethods(['getTerminalWidth'])
+            ->getMock();
         $application->setAutoExit(false);
         $application->expects($this->any())
             ->method('getTerminalWidth')

Diff for: Tests/Fixtures/MockableAppliationWithTerminalWidth.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console\Tests\Fixtures;
+
+use Symfony\Component\Console\Application;
+
+class MockableAppliationWithTerminalWidth extends Application
+{
+    public function getTerminalWidth(): int
+    {
+        return 0;
+    }
+}

Diff for: Tests/Question/QuestionTest.php

@@ -157,15 +157,15 @@ public function testSetAutocompleterValuesInvalid($values)
     public function testSetAutocompleterValuesWithTraversable()
     {
         $question1 = new Question('Test question 1');
-        $iterator1 = $this->getMockForAbstractClass(\IteratorAggregate::class);
+        $iterator1 = $this->createMock(\IteratorAggregate::class);
         $iterator1
             ->expects($this->once())
             ->method('getIterator')
             ->willReturn(new \ArrayIterator(['Potato']));
         $question1->setAutocompleterValues($iterator1);
 
         $question2 = new Question('Test question 2');
-        $iterator2 = $this->getMockForAbstractClass(\IteratorAggregate::class);
+        $iterator2 = $this->createMock(\IteratorAggregate::class);
         $iterator2
             ->expects($this->once())
             ->method('getIterator')