fix: update fixtures to expect required for NotNull property

The notNullFriend property with #[Assert\NotNull] correctly marks the
field as required in the generated schema. Update the JSON fixture and
test assertion to match.

Author: lacatoire

tests/Functional/Fixtures/JmsOptOutController.json

@@ -61,6 +61,9 @@
             "VirtualTypeClassDoesNotExistsHandlerDefined": {},
             "VirtualTypeClassDoesNotExistsHandlerNotDefined": {},
             "JMSUser": {
+                "required": [
+                    "not_null_friend"
+                ],
                 "properties": {
                     "id": {
                         "title": "userid",

tests/Functional/JMSFunctionalTest.php

@@ -218,6 +218,7 @@ public function testModelDocumentation(): void
                     'type' => 'integer',
                 ],
             ],
+            'required' => ['not_null_friend'],
             'schema' => 'JMSUser',
         ], json_decode($this->getModel('JMSUser')->toJson(), true));