This method performs exactly the same operation as the official
`v8::Exception::GetStackTrace()`, which is already used in other
places, so there's no point to have a duplicate of that in the
debug interface.

Bug: chromium:1283162
Change-Id: I09dd07f678165e1565bd77173e8ce64636ef649b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3366659
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78489}