a.k.a. "option 1a". Reflects the resolution of this discussion:
https://github.com/WebAssembly/function-references/issues/44

Bug: v8:7748
Change-Id: I6b53c353a1ace2aaf5b852addead51b9f76c9d64
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3782674Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81925}