test/fix Watchdog with browser dead & timeout conditions #47
Description
- browser be killed during init
- browser be killed after init
- WechatyBro injection fail
- WechatyBro init() fail
- WechatyBro heartbeat lost
- Wx App died during scan/login(not fire events any more)
- Wx App died after scan/login(not fire events any more)
etc...