Passing 0 to ColorTargetState.write_mask

[Polanas]

Greetings!
I have a question regardless wgpu::ColorWrites. Both wgpu and webgpu don't define a NONE variant, which would allow to not render to any color channels at all. It's really useful for only drawing to stencil/depth buffer.

fragment: Some(StaticFragmentStateDesc {
    entry_point: Some("fs_main"),
    targets: &[Some(wgpu::ColorTargetState {
        format: wgpu::TextureFormat::Rgba8UnormSrgb,
        blend: Some(wgpu::BlendState::REPLACE),
        write_mask: unsafe { std::mem::transmute::<u32, wgpu::ColorWrites>(0) },
    })],
}),

This appears to be working correctly, at least on the vulkan backend. Could this lead to UB or other unforeseen consequences?
If so, is there a better solution? Thanks!