492: Replace NonZeroU32 with u32 in TextureViewDescriptor r=kvark a=kunalmohan
Includes https://github.com/gfx-rs/wgpu/pull/854
(rustfmt seems to have introduced a number of other changes. I can revert them if they are undesired)
r?@kvark
Co-authored-by: Kunal Mohan <kunalmohan99@gmail.com>