params.start was not set when marker was present, however the barrier
relies on params.start.

Bug: chromium:1029379
Change-Id: I12cfbdbdec63518cfc0d0d174085ea8aefb3a375
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3605822Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80207}