VFAT Write Crash: Error Handling Renames (macOS)

## Description
When running a Windows XP host, attempting to use a VFAT (virtual FAT; folder as a FAT system) drive results in a crash once Windows finishes booting. UTM shows Error Code `-5`, and the message `Error Handling Renames`, and the Apple Crash Reporter denotes a crash in the vfat routines of QEMU.

~~Maybe I'm trying to use VFAT in an unsupported way, or maybe my configuration is wrong, or maybe UTM's builds of QEMU do not properly support this feature; I do not know. VFAT seems under-documented, due to the popularity of virtio-fs (viofs) and spice-webdav for file sharing. But virtio-fs has no known Windows XP drivers, and spice-webdav's service just crashes on boot with Windows XP.~~

### Update
Attempting to use a straight VFAT device, without attaching it to the SCSI bus, (`-drive file=fat:rw:/Path/To/Directory,format=raw,media=disk`) crashes in the same way. I tested this in case it was the method I was attaching the VFAT disk to the VM, rather than VFAT itself, but the result was the same.

## Configuration
* UTM Version: 4.6.4 (107)
* macOS Version: macOS 15.3 (24D5034f)
* Processor: M2
* Client: Windows XP Profession SP3

## Crash log
- [QEMULauncher-2025-01-15-152211.ips.json](https://github.com/user-attachments/files/18430452/QEMULauncher-2025-01-15-152211.ips.json)
> [!NOTE]
> macOS `.ips` logs are an unsupported file type by GitHub; please remove the added `.json` to view log in its native format

## Debug log
- [debug.log](https://github.com/user-attachments/files/18430591/debug.log)

## VM
- [config.plist.zip](https://github.com/user-attachments/files/18430524/config.plist.zip)