Merge branch '4.4' into 5.0

* 4.4: (27 commits)
  [Serializer] minor cleanup
  fix merge
  Run PHP 8 as 7.4.99
  Remove calls to deprecated ReflectionParameter::getClass().
  [VarDumper] fix PHP 8 support
  Add php 8 to travis.
  [Cache] Accessing undefined constants raises an Error in php8
  [Cache] allow DBAL v3
  Skip Doctrine DBAL on php 8 until we have a compatible version.
  [DomCrawler] Catch expected ValueError.
  Made method signatures compatible with their corresponding traits.
  [ErrorHandler] Apply php8 fixes from Debug component.
  [DomCrawler] Catch expected ValueError.
  [Validator] Catch expected ValueError.
  [VarDumper] ReflectionFunction::isDisabled() is deprecated.
  [BrowserKit] Raw body with custom Content-Type header
  [PropertyAccess] Parse php 8 TypeErrors correctly.
  [Intl] Fix call to ReflectionProperty::getValue() for static properties.
  [HttpKernel] Prevent calling method_exists() with non-string values.
  Fix wrong roles comparison
  ...

Author: nicolas-grekas

Tests/Form/Type/EntityTypeTest.php

@@ -60,6 +60,13 @@ class EntityTypeTest extends BaseTypeTest
 
     protected static $supportedFeatureSetVersion = 404;
 
+    public static function setUpBeforeClass(): void
+    {
+        if (\PHP_VERSION_ID >= 80000) {
+            self::markTestSkipped('Doctrine DBAL 2.x is incompatible with PHP 8.');
+        }
+    }
+
     protected function setUp(): void
     {
         $this->em = DoctrineTestHelper::createTestEntityManager();

Tests/Security/User/EntityUserProviderTest.php

@@ -24,6 +24,13 @@
 
 class EntityUserProviderTest extends TestCase
 {
+    public static function setUpBeforeClass(): void
+    {
+        if (\PHP_VERSION_ID >= 80000) {
+            self::markTestSkipped('Doctrine DBAL 2.x is incompatible with PHP 8.');
+        }
+    }
+
     public function testRefreshUserGetsUserByPrimaryKey()
     {
         $em = DoctrineTestHelper::createTestEntityManager();

Tests/Validator/Constraints/UniqueEntityValidatorTest.php

@@ -59,6 +59,13 @@ class UniqueEntityValidatorTest extends ConstraintValidatorTestCase
 
     protected $repositoryFactory;
 
+    public static function setUpBeforeClass(): void
+    {
+        if (\PHP_VERSION_ID >= 80000) {
+            self::markTestSkipped('Doctrine DBAL 2.x is incompatible with PHP 8.');
+        }
+    }
+
     protected function setUp(): void
     {
         $this->repositoryFactory = new TestRepositoryFactory();