Firefox 141 ships WebGPU on Windows

[Schweinepriester]

https://groups.google.com/a/mozilla.org/g/dev-platform/c/21W7YWSvYIM/m/U2gYnGK2BQAJ

On behalf of Mozilla's WebGPU team, I intend to let WebGPU ride the trains to release in Firefox 141 on Windows. Other platforms will follow as soon as practical. 

Tracking bug: webgpu-mvp.

Availability: WebGPU has been enabled in Firefox Nightly on all platforms since April 2023, and was enabled on Windows in Firefox 140 Early Beta without incident.

[Fyrd]

Thanks!