Bridged network crash on macOS 15 Sequoia

**Describe the issue**
Running any VM with bridged networking enabled fails with an unknown, "connection refused", or "operation not supported from socket" error, no matter network settings or device. It also won't allow me to set the bridged network interface, only "Automatic" appears. The VMs boot fine with other networking settings. Ventura can start the VMs fine with bridged networking enabled.

**Configuration**
* UTM Version: 4.5.3
* macOS Version: 15 Sequoia DB3U1/PB1
* Mac Chip: x86 (AMD hackintosh, no virtualization)

**Crash log**
The app doesn't crash, but gives an unknown, or "operation not supported from socket" error

**Debug log**
For all issues related to running a VM, _including_ crashes, you should attach a debug log. (This is unavailable for macOS-on-macOS VMs. Attach an excerpt of your system log instead.)
To get the Debug log: open UTM, and open the settings for the VM you wish to launch. Near the top of the `QEMU` page is `Debug Log`. Turn it on and save the VM. After you experience the issue, open the VM settings again and select `Export Log...` and attach it here.

**Upload VM**
If your issue is related to a specific VM, please upload the config.plist from your VM's .utm directory. To get this, right-click the VM in UTM and choose "Show in Finder". Then right-click the selected file in Finder and choose "Show Package Contents". The config.plist file is now visible. Right-click it and choose "Compress". Attach the resulting config.plist.zip file here.
You can upload the entire .utm if needed, but note this includes your VM's drive image and may contain personal data. Since Github has an attachment size limit, you may want to upload to another service such as Google Drive. Link it here.