I came across a solution and wanted to let others find this if they ever needed. Electron has a powerMonitor api which allows you to handle this and in my case it was the below code that fixed it for me

Electron.PowerMonitor.OnShutdown += () => 
{ 
    Log.Logger.Debug("Assist app is shutting down.., exiting app !!"); 
    Electron.App.Exit();
};