[WebGPU] Validate input passed to RemoteComputePassEncoderProxy::setBindGroup
<rdar://problem/116791362>
Pull request: https://github.com/WebKit/WebKit/pull/18932
Committed 269228@main (93fcf08ee776): <https://commits.webkit.org/269228@main> Reviewed commits have been landed. Closing PR #18932 and removing active labels.