* [flutter_tools] [dap] Ensure DAP sends app.stop/app.detach during terminate
Fixes an issue where the flutter_tester device may not be cleaned up correctly if we just terminate the Flutter process.
* Update integration test expectations
* Revert accidental commit
* [flutter_tools] [dap] Add support for passing env variables to spawned processes
* Use named args
* Use in-memory fs and FakePlatform
* Pass filesystem style to MemoryFileSystem
* Don't terminate Dart process pids from VM Service
These processes may be on another device, and in the case of attach the debugee should not be terminated anyway.
