APN Service continues connecting attempts after system "Forget VPN" (onRevoke not handled)

[Jelikton]

Steps to reproduce:

1. Open APN VPN app and connect to VPN (status becomes "Connected").
2. Go to system settings → Network & internet → VPN → tap "Forget" (or disconnect) for the APN VPN profile.
3. Return to the app.

Expected result:
App immediately switches to "Disconnected" state and stops all connection attempts.

Actual result:
App continues to show "Connecting..." status and keeps sending network requests. Logs show repeated Connecting... lines and ConnectException: Network is unreachable errors after the system has revoked the VPN profile.

Logs (example):
07-16 01:57:27.157 1407 9782 W APN : Непредвиденная ошибка ConnectException: «Network is unreachable»
07-16 01:57:31.148 1407 1407 I APN : Connecting...
07-16 01:57:31.197 1407 9782 W APN : Непредвиденная ошибка ConnectException: «Network is unreachable»
...

Root cause (based on code analysis):
In APNService.onRevoke() the connection flag (f9588i) is not reset and ongoing coroutines are not cancelled, so the service keeps retrying to reconnect even after the system has removed the VPN profile.