[AVM Module Issue]: Can't remove default_route_internet

### Check for previous/existing GitHub issues - [x] I have checked for previous/existing GitHub issues ### Issue Type? I'm not sure ### (Optional) Module Version 0.12.3 ### (Optional) Correlation Id _No response_ ### Description From my understanding, to use force tunneling you add a Management IP and then set a default route with your gateway as the next hop. This module always seems to add 0.0.0.0/0 => internet, causing route conflicts if you want to send everything to on-premises. Or am I misunderstanding how it's supposed to work?