FIX Avoid inferring model type

Since Versioned->versions() results in an ArrayList, it triggers database queries.
The database isn't always available when the schema is built (e.g. on deployment and CI environments).
Context: silverstripe/silverstripe-graphql#388

src/GraphQL/Plugins/VersionedDataObject.php

@@ -21,6 +21,7 @@
 use SilverStripe\Versioned\GraphQL\Resolvers\VersionedResolver;
 use SilverStripe\Versioned\Versioned;
 use Closure;
+use SilverStripe\GraphQL\Schema\Field\ModelField;
 
 // GraphQL dependency is optional in versioned,
 // and the following implementation relies on existence of this class (in GraphQL v4)
@@ -110,7 +111,12 @@ public function apply(ModelType $type, Schema $schema, array $config = []): void
         }
 
         $schema->addType($versionType);
-        $type->addField('versions', '[' . $versionName . ']', function (Field $field) use ($type, $schema, $config) {
+        $versionsFieldConfig = new ModelField('versions', [
+            'type' => '[' . $versionName . ']',
+            // TODO This isn't the actual resolvedModelClass, it just avoids triggering database queries through inference
+            'resolvedModelClass' => $type->getModel()->getSourceClass()
+        ], $type->getModel());
+        $type->addField('versions', $versionsFieldConfig, function (Field $field) use ($type, $schema, $config) {
                 $field->setResolver([VersionedResolver::class, 'resolveVersionList'])
                     ->addResolverContext('sourceClass', $type->getModel()->getSourceClass());
                 SortPlugin::singleton()->apply($field, $schema, [