Adds onDisconnect() BLE param (#7851)

Author: SuGlider

libraries/BLE/src/BLEServer.cpp

@@ -207,6 +207,7 @@ void BLEServer::handleGATTServerEvent(esp_gatts_cb_event_t event, esp_gatt_if_t
 		case ESP_GATTS_DISCONNECT_EVT: {
 			if (m_pServerCallbacks != nullptr) {         // If we have callbacks, call now.
 				m_pServerCallbacks->onDisconnect(this);
+				m_pServerCallbacks->onDisconnect(this, param);
 			}
             if(m_connId == ESP_GATT_IF_NONE) {
                 return;