[vm/fuzzer] Track and print invalid test cases
[vm/fuzzer] Track and print invalid test cases

Rationale:
To make debugging timeouts and skipped test cases easier, we
print them at the end of each isolate run.
Change-Id: I953c9103341dcf23616e2b550af5ebb5ce17739b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/117060
Reviewed-by: Aart Bik <293afa0533434225484ba3f9bf2859340baba6ea@google.com>
Commit-Queue: Felicitas Hetzelt <dd58ecf83e6dafb983e3eceed132b302900c5729@google.com>

dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk