Delaying marking requires tasks to be scheduled.

Bug: chromium:1054398
Change-Id: Ib92a0f5541f0e37cbbabfb3dd8185b56680d0142
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066977Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66376}