queue_write_texture: Validate the destination texture.

[jimblandy]

Calling queue_write_texture with an invalid destination texture id panics, rather than returning an error.

Steps to reproduce from JavaScript:

const adapter = await navigator.gpu.requestAdapter()
const device = await adapter.requestDevice()
const texture = device.createTexture({
  size: [0, 3798880576, 56],
  format: 'bc3-rgba-unorm-srgb',
  usage: GPUTextureUsage.COPY_SRC,
})

const buffer = new ArrayBuffer(64)
device.queue.writeTexture({ texture: texture }, buffer, { bytesPerRow: 3509731313 }, { width: 7251 })

Checklist

• Run cargo clippy.
• Run RUSTFLAGS=--cfg=web_sys_unstable_apis cargo clippy --target wasm32-unknown-unknown if applicable.
• Add change to CHANGELOG.md. See simple instructions inside file.

[nical]

Oops I didn't wait for a changelog entry

[jimblandy]

Oops I didn't wait for a changelog entry

Addressed in fac4731.