Run variant stress_concurrent_allocation in debug mode and with TSAN.
Failing tests will close tree and block CQ.

Bug: v8:10315
Change-Id: I0ba2921a3718a08b88516f209364b52c8817c331
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2436343
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70299}