fix(S2-b): use authenticated WSS on standard TLS port

FieldLogger/Services/SettingsService.cs

@@ -73,7 +73,7 @@ public sealed class SettingsService
 
     public int MqttPort
     {
-        get => Preferences.Default.Get(MqttPortKey, 8884);
+        get => Preferences.Default.Get(MqttPortKey, 443);
         set => Preferences.Default.Set(MqttPortKey, value);
     }
 

FieldLogger/Services/Sync/MqttSyncService.cs

@@ -185,6 +185,9 @@ public sealed class MqttSyncService : IMqttSyncService
             {
                 Host = _settings.MqttHost,
                 Port = _settings.MqttPort,
+                WebSocketUri = _settings.MqttPort == 443
+                    ? $"wss://{_settings.MqttHost}/mqtt"
+                    : null,
                 ClientId = _settings.MqttClientId,
                 Username = _settings.MqttOrgId,
                 Password = password,