fix(realtime): add port env

app/realtime.php

@@ -1,6 +1,7 @@
 <?php
 
 use Appwrite\Realtime\Server;
+use Utopia\App;
 
 require_once __DIR__ . '/init.php';
 
@@ -10,4 +11,4 @@ $config = [
     'package_max_length' => 64000 // Default maximum Package Size (64kb)
 ];
 
-$realtimeServer = new Server($register, config: $config);
+$realtimeServer = new Server($register, port: App::getEnv('PORT', 80), config: $config);