Remove fragile assertions (#10239)

RuntimePublicReflectionProperty has been deprecated in favor of
RuntimeReflectionProperty.

Let us use a more robust assertion.

Author: greg0ire

tests/Doctrine/Tests/ORM/Functional/ValueObjectsTest.php

@@ -19,8 +19,8 @@
 use Doctrine\ORM\Mapping\MappingException;
 use Doctrine\ORM\Mapping\ReflectionEmbeddedProperty;
 use Doctrine\ORM\Query\QueryException;
-use Doctrine\Persistence\Reflection\RuntimePublicReflectionProperty;
 use Doctrine\Tests\OrmFunctionalTestCase;
+use ReflectionProperty;
 
 use function class_exists;
 use function sprintf;
@@ -53,7 +53,7 @@ public function testMetadataHasReflectionEmbeddablesAccessible(): void
             );
         } else {
             self::assertInstanceOf(
-                RuntimePublicReflectionProperty::class,
+                ReflectionProperty::class,
                 $classMetadata->getReflectionProperty('address')
             );
         }