crash when reloading app with the pause isolate flag set

[devoncarew]

When hot reloading a flutter app with the pause parameter set to true, I see a crash. This is for:

• running against an iOS simulator (I have not tried an Android device)
• run the app (flutter run or via IntelliJ)
• set one breakpoint
• issue a hot reload w/ the pause param to true (https://github.com/flutter/flutter/blob/master/packages/flutter_tools/lib/src/hot.dart#L507)
• the crash below is consistent; it looks like we do get the PausePostRequest event back in the client, right before the crash

../../dart/runtime/vm/debugger_api_impl.cc: 181: error: unimplemented code
Dumping native stack trace for thread 3003
  [0x0000000105806e41] dart::Profiler::DumpStackTrace(bool)
  [0x00000001054e7833] dart::DynamicAssertionHelper::Fail(char const*, ...)
  [0x00000001054dc67f] dart::DebuggerEventHandler(dart::ServiceEvent*)
  [0x00000001055e22de] dart::Debugger::Pause(dart::ServiceEvent*)
  [0x00000001055e1b62] dart::Debugger::PauseRequest(dart::ServiceEvent::EventKind)
  [0x00000001056aaf3b] dart::Isolate::PausePostRequest()
-- End of DumpStackTrace

@johnmccutchan

[johnmccutchan]

For crashes in the runtime, please file an issue here.

[github-actions]

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