Allow @Property annotations on Entity classes

- Updates EntityFieldsViaMagicReflectionExtensionTest to test annotated
  properties are skipped in the same way as explicit properties.
- Adds an annotation to ReflectionEntityTest fixture
- No integration test to make sure annotations are actually respected,
  not sure if this is actually needed?

Author: jacktonkin

src/Reflection/EntityFieldsViaMagicReflectionExtension.php

@@ -20,7 +20,7 @@ class EntityFieldsViaMagicReflectionExtension implements PropertiesClassReflecti
 
     public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
     {
-        if ($classReflection->hasNativeProperty($propertyName)) {
+        if ($classReflection->hasNativeProperty($propertyName) || array_key_exists($propertyName, $classReflection->getPropertyTags())) {
             // Let other parts of PHPStan handle this.
             return false;
         }

tests/fixtures/drupal/modules/phpstan_fixtures/src/Entity/ReflectionEntityTest.php

@@ -7,6 +7,9 @@
 use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\user\UserInterface;
 
+/**
+ * @property \Drupal\Core\Field\EntityReferenceFieldItemListInterface $user_id
+ */
 final class ReflectionEntityTest extends ContentEntityBase {
 
     public static function baseFieldDefinitions(EntityTypeInterface $entity_type)

tests/src/Reflection/EntityFieldsViaMagicReflectionExtensionTest.php

@@ -6,6 +6,7 @@
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\entity_test\Entity\EntityTest;
 use Drupal\module_installer_config_test\Entity\TestConfigType;
+use Drupal\phpstan_fixtures\Entity\ReflectionEntityTest;
 use mglaman\PHPStanDrupal\Reflection\EntityFieldsViaMagicReflectionExtension;
 use mglaman\PHPStanDrupal\Tests\AdditionalConfigFilesTrait;
 use PHPStan\Testing\PHPStanTestCase;
@@ -53,6 +54,12 @@ public function dataHasProperty(): \Generator
             'foobar',
             false
         ];
+        yield 'annotated properties are skipped on content entities' => [
+            // @phpstan-ignore-next-line
+            ReflectionEntityTest::class,
+            'user_id',
+            false
+        ];
         // @todo really entity is only supported on EntityFieldItemList
         yield 'field item list: entity' => [
             \Drupal\Core\Field\FieldItemList::class,