Relative indexing methods have shipped since M92.

Bug: v8:10961
Change-Id: I4346a3bed443c9cc48924e5ef23ec012eeeecab1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3622134Reviewed-by: Patrick Thier <pthier@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80345}