322baef3e1
This prevents such an isolate from occupying one of the limited number of mutator slots and blocking other isolates in the same group from running. TEST=ci Bug: https://github.com/dart-lang/sdk/issues/51254 Bug: https://github.com/dart-lang/sdk/issues/54687 Bug: https://github.com/dart-lang/sdk/issues/57119 Change-Id: Ic04bbaa7f482d533ad0ecf2c6da17ea9f00c264e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/398927 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>