[WebGPU] Migrate from prepareForDisplay()/createSurfaceTexture() to present()/getCurrentTexture()
<rdar://problem/104541617>
Pull request: https://github.com/WebKit/WebKit/pull/8963
Committed 259884@main (501cc5c18513): <https://commits.webkit.org/259884@main> Reviewed commits have been landed. Closing PR #8963 and removing active labels.
Re-opened since this is blocked by bug 251880
Pull request: https://github.com/WebKit/WebKit/pull/9797
Committed 259996@main (4220ffa8bbcc): <https://commits.webkit.org/259996@main> Reviewed commits have been landed. Closing PR #9797 and removing active labels.