bug(ext/webgpu): requiredFeatures don't work

[DjDeveloperr]

Even after specifying a required feature in GPUDeviceDescriptor, the device's feature field contains no feature. Not only that, in my case, timestamp query related things seem to fail silently (but can be patched to throw the errors).

Repro 1, device.features don't contain the required feature

const adapter = (await navigator.gpu.requestAdapter())!;
console.log("adapter has timestamp query feature:", adapter.features.has("timestamp-query"));

const device = (await adapter.requestDevice({
  requiredFeatures: ["timestamp-query"],
}))!;
console.log("device has timestamp query feature:", device.features.includes("timestamp-query"));

Output:

Repro 2, device.createQuerySet silently fails in validation

import { enableValidationErrors } from "https://crux.land/gpu_err@1.0.0";

const adapter = (await navigator.gpu.requestAdapter())!;

const device = (await adapter.requestDevice({
  requiredFeatures: ["timestamp-query"],
}))!;

enableValidationErrors(device, true);

const querySet = device.createQuerySet({
  type: "timestamp",
  count: 1,
});

Output:

deno: v1.16.0
os: windows
webgpu backend: Vulkan, gpu: Intel