webnn: fix coreml handling for inputs with special characters
Remove characters from input/output names that are not [A-Za-z0-9_@]
to satisfy CoreML requirement.
Bug: 352720906
Change-Id: I6147f242f5b2df02aab76d94576d759addb1dbb1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5703343
Reviewed-by: Reilly Grant reillyg@chromium.org
Commit-Queue: Phillis Tang phillis@chromium.org
Cr-Commit-Position: refs/heads/main@{#1327670}