fix the created tasks cannot be deleted

[Iceber]

task.Delete only allows direct deletion of tasks with PID 0.

fix: containerd/containerd#10438

Related pr: containerd/containerd#10442

[apostasie]

Moving the conversation back in nerdctl then (since the original ticket had been moved to containerd).

Finally stumbled upon a repro:

{ sleep 1; echo "\16\17"; } | /usr/bin/unbuffer -p nerdctl run -it --name foobar ghcr.io/stargz-containers/alpine:3.13-org

nerdctl rm -f foobar
ERRO[0000] 1 errors:
task must be stopped before deletion: created: failed precondition

Also confirming that this PR does fix the issue.

@AkihiroSuda ^
I would love to get this in...

[AkihiroSuda]

Thanks