When an object either gets promoted or evacuated, old-to-shared slots
need to be recorded like we already do for old-to-old or old-to-new.

Bug: v8:11708
Change-Id: Ifb5b3d50a59aa45bf8289e1cd7610bb2f317fd6c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3794648Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82096}