Refactor Server model to remove SSH multiplexing file

app/Models/Server.php

@@ -5,6 +5,7 @@ namespace App\Models;
 use App\Actions\Server\InstallDocker;
 use App\Actions\Server\StartSentinel;
 use App\Enums\ProxyTypes;
+use App\Helpers\SshMultiplexingHelper;
 use App\Jobs\CheckAndStartSentinelJob;
 use App\Notifications\Server\Reachable;
 use App\Notifications\Server\Unreachable;
@@ -1064,6 +1065,8 @@ $schema://$host {
     {
         config()->set('constants.ssh.mux_enabled', ! $isManualCheck);
 
+        SshMultiplexingHelper::removeMuxFile($this);
+
         if ($this->skipServer()) {
             return ['uptime' => false, 'error' => 'Server skipped.'];
         }