bfbbe5c6b6
TEST=pkg/vm_service/test/id_zone_deletion_on_client_disconnect_with_dds_test.dart, pkg/vm_service/test/id_zone_deletion_on_client_disconnect_without_dds_test.dart, CI Issue: https://github.com/dart-lang/sdk/issues/55869 CoreLibraryReviewExempt: This CL does not include any core library API changes, only VM Service implementation changes in sdk/lib/vmservice/client.dart and sdk/lib/vmservice/running_isolates.dart. Change-Id: I32a72ade89b858519c61b5124adbeafb835c3d61 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381520 Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Derek Xu <derekx@google.com>