The app hanged on exit

[ameshkov]

Here's what happened:

1. The app stopped filtering
2. I tried restarting protection a few times
3. Then I decided to exit
4. The app hanged on exit with no visible reason.

Here's the report after sending SIGABRT to it:
https://sentry.adguard.com/adg/adguard-mac/issues/20901/

It might've been caused by this actually:

onHostAddressUpdate_cb 
....dev/AG/core/mac/framework/objc/ANProxyServer.m:98