[WebGPU] "bgra8unorm-storage" is missing from GPUFeatureName
<rdar://problem/105767446>
Pull request: https://github.com/WebKit/WebKit/pull/10502
Committed 260785@main (f5c8208c8ddb): <https://commits.webkit.org/260785@main> Reviewed commits have been landed. Closing PR #10502 and removing active labels.