webnn: add some missing WPT tests to cover the label
This CL adds some missing WPT tests such as validateUnaryOperation and
validateSingleInputOperation.
Bug: 354513206
Change-Id: Ic921927e955893768719a982564377bc3f352cbf
Cq-Include-Trybots: luci.chromium.try:win11-blink-rel,mac14.arm64-blink-rel,mac14-blink-rel, linux-blink-rel
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5789217
Reviewed-by: Austin Sullivan asully@chromium.org
Reviewed-by: ningxin hu ningxin.hu@intel.com
Commit-Queue: Lisha Guo lisha.guo@intel.com
Cr-Commit-Position: refs/heads/main@{#1342608}