This shares the code of running the comparisons on the fuzz test
and on the smoke tests. While this change retains behavior for running
the fuzz test, the smoke test has slight changes in favor of code
readability:

1. Smoke tests can now bail out on output suppressions (There are
none now. And if we'd ever add any we'd need to write them in a way,
such that they ignore the output of the smoke tests, which don't
have much output anyways).
2. Crashes in smoke tests are now a hard failure. This is a desired
feature anyways. It's unlikely that the smoke test crashes as then
nothing would work.

No-Try: true
Bug: chromium:1100114
Change-Id: Ice3c6d18b549727c486a70756a72038c8b2029ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2273125
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68586}