webnn: Enforce input data type constraints for some reduce operators
As specified in webmachinelearning/webnn#646
Bug: 328567884
Change-Id: I5e600bdc791ecd4530408b65c15dd20611c211a3
Cq-Include-Trybots: luci.chromium.try:mac14-blink-rel,mac14.arm64-blink-rel
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5517811
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@{#1303757}