Send the widgetId as part of all toWidget requests

Addresses part of https://github.com/vector-im/riot-web/issues/6708

Signed-off-by: Travis Ralston <travpc@gmail.com>

src/WidgetMessaging.js

@@ -44,6 +44,8 @@ export default class WidgetMessaging {
     }
 
     messageToWidget(action) {
+        action.widgetId = this.widgetId; // Required to be sent for all outbound requests
+
         return this.toWidget.exec(action, this.target).then((data) => {
             // Check for errors and reject if found
             if (data.response === undefined) { // null is valid