WebGPU: Point and line primitives must not have depth bias

Spec now makes it a validation error to set depthBias,
depthBiasSlopeScale, and depthBiasClamp to a non-zero value when the
topology for a render pipeline is a line or point type. This CL removes
the warning in the DevTools Console and forcing the values to 0 in these
circumstances that was added previously in
https://chromium-review.googlesource.com/c/chromium/src/+/5703803

Bug: 352567424
Change-Id: I4bd0c83f97e465b92b9a6cd6f8d4953cdcb9aa64
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5905368
Commit-Queue: Fr <beaufort.francois@gmail.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1364866}