We were sometimes printing the data pointer, and sometimes the handle
location. This CL always uses the existing operator<< overload to print
ObjectRefs, which currently means printing the data pointer.

Bug: v8:7790
Change-Id: Ic5e2dad075678d2250bc0bcb170046d055680572
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1625989Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61777}