VPN indicator fix for Cinnamon desktop Network applet

applet.js

// The code is public domain and you can use it as you want.
// The following code should be added to _updateIcon function after else block and before catch block
// around line # 2345
// File path: /usr/share/cinnamon/applets/network@cinnamon.org/applet.js
// When VPN is connected the network icon is changed to "lock with WiFi" if connected via WiFi
// and to "lock with wire" if connected via other methods.
// *** Start of VPN icon fix ***
for (let i = 0; i < this._activeConnections.length; i++) {
    const a = this._activeConnections[i];
    if (a._section === NMConnectionCategory.VPN && a.state === NM.ActiveConnectionState.ACTIVATING) {
        this._setIcon('network-vpn-acquiring');
        this.set_applet_tooltip(_("Connecting to the VPN..."));
        break;
    }
    else if (a._section === NMConnectionCategory.VPN && a.state === NM.ActiveConnectionState.ACTIVATED) {
        let iconName = 'network-vpn';
        if (mc._section == NMConnectionCategory.WIRELESS) {
            const dev = mc._primaryDevice;
            if (dev) {
                const ap = dev.device.active_access_point;
                iconName = 'network-wireless-signal-' + signalToIcon(ap.strength) + '-secure-symbolic';
            }
        }
        this._setIcon(iconName);
        this.set_applet_tooltip(_("Connected to the VPN"));
        break;
    }
}
// *** End of VPN icon fix ***