Also capture async stack traces if we're in a reject handler.

Fixes node issue https://github.com/nodejs/node/issues/30822

Change-Id: I703012ddb88b5b5d17baba843a969b398ef99fa1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1969897
Auto-Submit: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65687}