Properly pass along build information to Wings; closes pterodactyl#2552

Author: DaneEveritt

app/Services/Servers/BuildModificationService.php

@@ -82,7 +82,11 @@ public function handle(Server $server, array $data)
 
         $updateData = $this->structureService->handle($server);
 
-        $this->daemonServerRepository->setServer($server)->update($updateData['build'] ?? []);
+        if (!empty($updateData['build'])) {
+            $this->daemonServerRepository->setServer($server)->update([
+                'build' => $updateData['build'],
+            ]);
+        }
 
         $this->connection->commit();