[vm/debugger] --trace-debugger-stacktrace prints async causal stack trace
[vm/debugger] --trace-debugger-stacktrace prints async causal stack trace

Allow --trace-debugger-stacktrace to print frames in async causal stack trace.

Change-Id: I52bcbcbb22ed939074b682ce18e328df775ea0b0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128282
Commit-Queue: Zichang Guo <d26af3001798f91912fb1504666bca93c093d553@google.com>
Reviewed-by: Alexander Markov <239e774fd29abc1267878f57afe1a8a03e0ca887@google.com>
Reviewed-by: Siva Annamalai <2e618a8cbd7bb6b3d4409061ae407d692a098546@google.com>

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