shimv2: cleanup container if not found

Shutdown API relies on it being cleaned up in order to proceed.
Otherwise it fails silently and shimv2 process never quits.

This can be triggered by killing the vmm while pod is running.

Fixes: #2345
Signed-off-by: Peng Tao <bergwolf@hyper.sh>

containerd-shim-v2/delete.go

@@ -17,11 +17,11 @@ import (
 )
 
 func deleteContainer(ctx context.Context, s *service, c *container) error {
-	if !c.cType.IsSandbox() {
-		status, err := s.sandbox.StatusContainer(c.id)
-		if err != nil {
-			return err
-		}
+	status, err := s.sandbox.StatusContainer(c.id)
+	if err != nil && !isNotFound(err) {
+		return err
+	}
+	if !c.cType.IsSandbox() && err == nil {
 		if status.State.State != types.StateStopped {
 			_, err = s.sandbox.StopContainer(c.id, false)
 			if err != nil {