tests: Skip test_graphics_compute_queue_synchronization() on paravirtualized MoltenVK.
This used to work when the macOS runner had a Sonoma host system. Now it has Sequoia, even if the guest is still Sonoma, and the test crashes with:
[mvk-error] VK_TIMEOUT: MTLCommandBuffer "vkQueueSubmit MTLCommandBuffer on Queue 3-0" execution failed (code 2): Caused GPU Hang Error (00000003:kIOGPUCommandBufferCallbackErrorHang)
vkd3d:56072:err:vkd3d_wait_for_gpu_timeline_semaphore Failed to wait for Vulkan timeline semaphore, vr -4.
Upgrading MoltenVK or the guest to Sequoia doesn't seem to help. I haven't investigated the problem, but my experience is that the paravirtualized Metal driver has a number of problems.