wsl: Failed to configure network (networkingMode Mirrored), falling back to networkingMode None.

### Windows Version

Microsoft Windows [Version 10.0.26100.5074]

### WSL Version

2.5.7.0

### Are you using WSL 1 or WSL 2?

- [x] WSL 2
- [ ] WSL 1

### Kernel Version

6.6.87.1

### Distro Version

Ubuntu 24.04

### Other Software

_No response_

### Repro Steps

Start WSL using wsl command and the following WSL config
```
[wsl2]
networkingMode=mirrored
```

### Expected Behavior

WSL should start fine and networking should work in mirrored mode

### Actual Behavior

```
wsl: An internal error occurred.
Error code: CreateInstance/CreateVm/ConfigureNetworking/0x8007054f
wsl: Failed to configure network (networkingMode Mirrored), falling back to networkingMode None.
```
Occasionally it is resolved with a reboot, but even running `wsl --shutdown` and restarting just WSL results in the same error then requires a system reboot

### Diagnostic Logs

I was unable to get logs at the time of this failing but I was able to capture this screenshot

Start with the reported WSL 2 configuration using networkingMode=mirrored on Windows 10.0.26100.5074 with WSL 2.5.7.0 and Ubuntu 24.04, then reproduce the ConfigureNetworking/0x8007054f failure and collect diagnostic logs. Done means WSL starts without falling back to networkingMode None and mirrored networking works without requiring a host reboot.

Written by the indexing model from the issue text.