[deno_webgpu] WebGPU GPUSupportedFeatures object doesn't include has method

[haoyunfeix]

Code:

const adapter = await navigator.gpu.requestAdapter();
const device = await adapter?.requestDevice();

console.log(device.features.has('timestamp-query'));

Output:

error: Uncaught (in promise) TypeError: device.features.has is not a function
console.log(device.features.has('timestamp-query'));

Expected output:
True or False

Due to WebGPU spec and webidl spec, device.features is a setlike Object and should includes has method, but there is not.

[vicary]

Gently ping @crowlKats from #7977, is the current array implementation intentional?

[crowlKats]

No, this seems to be something that was missed in the implementation