The flag is true by default and passing
--noincremental-marking-on-allocation disables starting of incremental
marking on allocation and incremental marking steps on allocation.

Change-Id: I4537e0eeaaf93fb713fcacd3860e29b98df441fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2154194Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67228}