was: hide lbl_ln4 when WAS WS is connected

The label sometimes showed "Connecting to WAS ..." when it shouldn't.
Clear the label and restore text alignment to left, to avoid the label
showing up when it shouldn't.

main/was.c

@@ -54,6 +54,11 @@ static void IRAM_ATTR cb_ws_event(const void *arg_evh, const esp_event_base_t *b
             if (!config_valid) {
                 request_config();
             }
+            if (lvgl_port_lock(lvgl_lock_timeout)) {
+                lv_obj_add_flag(lbl_ln4, LV_OBJ_FLAG_HIDDEN);
+                lv_obj_set_style_text_align(lbl_ln4, LV_TEXT_ALIGN_LEFT, 0);
+                lvgl_port_unlock();
+            }
             break;
         case WEBSOCKET_EVENT_DATA:
             ESP_LOGV(TAG, "WebSocket data received");