Issue #3368845: Remove \Drupal\Tests\jsonapi\Kernel\JsonapiKernelTestBase::createEntityReferenceField and just use \Drupal\Tests\field\Traits\EntityReferenceTestTrait::createEntityReferenceField
requested to merge issue/drupal-3368845:3368845-remove-drupaltestsjsonapikerneljsonapikerneltestbasecreateentityreferencefield-and into 11.x