onionmasq-apple: NetworkExtension does not stop when requested
Asking the Orbot Mac (with onionmasq) NetworkExtension to stop results in:
- Orbot UI saying it's stopped
- System Preferences saying it's trying to stop
- Logs from the NetworkExtension suggesting it's still running perfectly fine
It eventually times out the stop operation, and then restarts the NetworkExtension (for some unknown reason), making it quite hard to actually stop.