Conservative tracing of an in construction objects might enter an
infinite recursion if the object holds a reference to itself.
The second time we try to trace the object it will be already marked and
we can bail out of tracing it again.

Bug: chromium:1056170
Change-Id: I74e99ca70c83f00d47299562d291adf7ba4a5808
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2715065
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72979}