networkAgent: add support for SAE secrets

NetworkManager supports "WPA3 Personal" networks for some time now, they
use the SAE authentication. Add support for it alongside other
password-based mechanisms.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/751

js/ui/components/networkAgent.js

@@ -213,6 +213,7 @@ class NetworkSecretDialog extends ModalDialog.ModalDialog {
         // First the easy ones
         case 'wpa-none':
         case 'wpa-psk':
+        case 'sae':
             secrets.push({ label: _("Password: "), key: 'psk',
                            value: wirelessSecuritySetting.psk || '',
                            validate: this._validateWpaPsk, password: true });