webnn: add support limits for concat and where
This CL adds data type support limits for concat and where. Since
where is not implemented in the CoreML backend, the supported data
types are set empty.
Bug: 345271830
Change-Id: Iecfa12738dd663d10cd8f42737d4b69cc8e32a55
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/+/5679616
Reviewed-by: Alex Gough ajgo@chromium.org
Auto-Submit: Shiyi Zou shiyi.zou@intel.com
Commit-Queue: Shiyi Zou shiyi.zou@intel.com
Reviewed-by: Phillis Tang phillis@chromium.org
Cr-Commit-Position: refs/heads/main@{#1324693}