[WebGPU] RenderPipeline does not retain the buffers it uses, leading to the possibility of the buffer being destroyed
<rdar://problem/127408015>
This is actually in the encoders, updating title. It leads to the possibility of the buffer being destroyed before the command buffer is submitted
Pull request: https://github.com/WebKit/WebKit/pull/28051
Committed 278412@main (0a9423a613b0): <https://commits.webkit.org/278412@main> Reviewed commits have been landed. Closing PR #28051 and removing active labels.