fix: clear interval variable after deleting timer

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

commons/src/message-transporters/message-transporter.ts

@@ -105,6 +105,7 @@ export class MessageTransporter extends EventEmitter2<MessageEventPayloadMap> {
   private stopSendingOfReadyRequests() {
     if (this.readyInterval !== undefined) {
       clearInterval(this.readyInterval)
+      this.readyInterval = undefined
     }
   }