Since https://crrev.com/c/3486556, several old metrics related to GC
have disappeared from chromeperf, showing very small (near zero) values,
e.g., v8-gc-scavenger, v8-gc-full-mark-compactor,
v8-gc-latency-mark-compactor. This CL fixes this issue.

Bug: chromium:1315527
Bug: chromium:1154636
Change-Id: I5ee7167a6d4a6a54b2272bb63588990db17dabbc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3585565Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80021}