BUG: System Proxy not working on KDE 6

## Describe the problem **Expected behavior:** When activating "System Proxy", proxy in KDE settings should be set to nekoray proxies. **Actual behavior:** Activating and deactivating System Proxy has no effect on KDE Proxy settings. Tun mode and manually setting proxy to 127.0.0.1:2080 work fine. ## How to reproduce - Install KDE 6 (In my case, Plasma 6.3.2 [KF 6.11.0] [Qt 6.8.2] (x11) on openSUSE Tumbleweed) - Download nekoray-4.0.1-2024-12-12-linux64.zip, extract and run it - Add some configs and connect to them - Activate "System Proxy" - Check System Settings > Networking > Wi-Fi & Internet > Proxy - It is still on "No proxy", should be on "Use manually..." as I saw in KDE5