fix(web): raise only TERMINATED message on session termination with the error backtrace (#837)

Author: RRRadicalEdward

web-client/iron-remote-desktop/src/services/remote-desktop.service.ts

@@ -188,13 +188,9 @@ export class RemoteDesktopService {
             .catch((err: IronError) => {
                 this.setVisibility(false);
 
-                this.raiseSessionEvent({
-                    type: SessionEventType.ERROR,
-                    data: err.backtrace(),
-                });
                 this.raiseSessionEvent({
                     type: SessionEventType.TERMINATED,
-                    data: 'Session was terminated.',
+                    data: 'Session was terminated with an error: ' + err.backtrace() + '.',
                 });
             });
     }