Results 2 issues of shujer

hi, master, I try to use servicetak + IntermediateCatchEvent to handle some callback service task,but seems signal doesn't work. The process was blocked by wait message, if I use userTask...

## 🐛 Bug Report Lib version: 4.3.2 ## Steps To Reproduce ```javascript import * as ExcelJS from 'exceljs' import { Stream, PassThrough } from 'stream' const stream = new Stream.Duplex.PassThrough({})...