Don't pass MTLRenderPipelineDescriptor with invalid color, depth and stencil attachments to MTLDevice newRenderPipelineStateWithDescriptor:error as on HW, such as Intel HD Graphics 6000 and Intel Iris Pro, this will result in a validation assertion inside Metal framework.
Pull request: https://github.com/WebKit/WebKit/pull/1494
Committed r295583 (251588@main): <https://commits.webkit.org/251588@main>
Reviewed commits have been landed. Closing PR #1494 and removing active labels.