See https://github.com/WebAssembly/stringref/issues/1.

Bug: v8:12868
Change-Id: Icd197b4872a72ae84878b2ac48a66f7026ab90cd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3745369
Commit-Queue: Andy Wingo <wingo@igalia.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81558}