message: fix: WebAdapter only sends message if websocket is OPEN
diff: @@ -200,7 +200,7 @@ export class WebAdapter extends BotAdapter {
  if (channel === 'websocket') {
  // If this turn originated with a websocket message, respond via websocket
  var ws = clients[activity.recipient.id];
  - if (ws) {
  + if (ws && ws.readyState === 1) {
  try {
  ws.send(JSON.stringify(message));
  } catch (err) {
  