fix(websocket): Continue waiting for TCP connection to be closed

Prevents an issue where WEBSOCKET_EVENT_CLOSED is not sent after
websocket is closed.

components/esp_websocket_client/esp_websocket_client.c

@@ -1040,7 +1040,7 @@ static void esp_websocket_client_task(void *pv)
             int ret = esp_transport_ws_poll_connection_closed(client->transport, 1000);
             if (ret == 0) {
                 // still waiting
-                break;
+                continue;
             }
             if (ret < 0) {
                 ESP_LOGW(TAG, "Connection terminated while waiting for clean TCP close");