This fixes a compile error under C++20.

Bug: chromium:1284275
Change-Id: Ib263d3817c578825d303926f321eaec227e5add8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3864103
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82835}