[WebGPU] GPUQueue.copyExternalImageToTexture fails for some formats
<rdar://problem/118725062>
Pull request: https://github.com/WebKit/WebKit/pull/20832
Committed 271067@main (7b2dc45dd08f): <https://commits.webkit.org/271067@main> Reviewed commits have been landed. Closing PR #20832 and removing active labels.