Merge branch '6.3' into 6.4

* 6.3:
  [Form] Clean up in tests
  remove invalid test

Author: nicolas-grekas

Tests/Extension/Core/DataTransformer/ChoiceToValueTransformerTest.php

@@ -18,8 +18,8 @@
 
 class ChoiceToValueTransformerTest extends TestCase
 {
-    protected ?ChoiceToValueTransformer $transformer;
-    protected ?ChoiceToValueTransformer $transformerWithNull;
+    protected ChoiceToValueTransformer $transformer;
+    protected ChoiceToValueTransformer $transformerWithNull;
 
     protected function setUp(): void
     {
@@ -30,12 +30,6 @@ protected function setUp(): void
         $this->transformerWithNull = new ChoiceToValueTransformer($listWithNull);
     }
 
-    protected function tearDown(): void
-    {
-        $this->transformer = null;
-        $this->transformerWithNull = null;
-    }
-
     public static function transformProvider(): array
     {
         return [

Tests/Extension/Core/DataTransformer/DateTimeToRfc3339TransformerTest.php

@@ -20,8 +20,8 @@ class DateTimeToRfc3339TransformerTest extends BaseDateTimeTransformerTestCase
 {
     use DateTimeEqualsTrait;
 
-    protected ?\DateTime $dateTime;
-    protected ?\DateTime $dateTimeWithoutSeconds;
+    protected \DateTime $dateTime;
+    protected \DateTime $dateTimeWithoutSeconds;
 
     protected function setUp(): void
     {
@@ -31,12 +31,6 @@ protected function setUp(): void
         $this->dateTimeWithoutSeconds = new \DateTime('2010-02-03 04:05:00 UTC');
     }
 
-    protected function tearDown(): void
-    {
-        $this->dateTime = null;
-        $this->dateTimeWithoutSeconds = null;
-    }
-
     public static function allProvider(): array
     {
         return [