If we attempt to pause, we'd check whether frames are framework code
which we pattern match with a regexp. That could cause re-entering
regexp, which is not allowed.

Fixed: chromium:1125934
Change-Id: I3b52b202a5570f7929def39176cfe5e52be3dfd5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2602948
Commit-Queue: Yang Guo <yangguo@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71876}