[WebGPU] Using the stencil reference value as the stencil clear value fails when the reference value is greater than 255
<rdar://problem/117610399>
Pull request: https://github.com/WebKit/WebKit/pull/19668
Committed 269957@main (c571e2a7ad86): <https://commits.webkit.org/269957@main> Reviewed commits have been landed. Closing PR #19668 and removing active labels.