[WebGPU] Clear textures with a render pass instead of using the MTLBlitCommandEncoder
radar://125068306
Pull request: https://github.com/WebKit/WebKit/pull/26178
Committed 276446@main (f3577bf0e062): <https://commits.webkit.org/276446@main> Reviewed commits have been landed. Closing PR #26178 and removing active labels.