webnn: CoreML support int8/uint8 for immediate constant values
Add int8/uint8 support for immediate values too. These are currently
used for scalar constants and int32 constants.
Bug: 333952702
Change-Id: I203a226dd6add99f5622790db3ea2a273b8b9479
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5958133
Reviewed-by: Austin Sullivan asully@chromium.org
Commit-Queue: Phillis Tang phillis@chromium.org
Cr-Commit-Position: refs/heads/main@{#1373537}