Empty containers produce audit results

[alexvanin]

In neofs-dev-env with neofs-node v0.22.0 I see these logs:

2021-07-01T17:04:12.486Z        info    audit/process.go:85     select storage groups for audit {"epoch": 117, "cid": "7X9hUZBZzCQRhB1USME51FrMpn9j9DkdBEfbtnzEujKV", "amount": 0}
2021-07-01T17:04:12.486Z        debug   auditor/exec.go:21      executing PoR check...  {"container ID": "7X9hUZBZzCQRhB1USME51FrMpn9j9DkdBEfbtnzEujKV"}
2021-07-01T17:04:12.486Z        debug   auditor/exec.go:21      executing PoP check...  {"container ID": "7X9hUZBZzCQRhB1USME51FrMpn9j9DkdBEfbtnzEujKV"}
2021-07-01T17:04:12.486Z        debug   auditor/exec.go:21      executing PDP check...  {"container ID": "7X9hUZBZzCQRhB1USME51FrMpn9j9DkdBEfbtnzEujKV"}
2021-07-01T17:04:12.486Z        debug   auditor/context.go:195  writing audit report... {"container ID": "7X9hUZBZzCQRhB1USME51FrMpn9j9DkdBEfbtnzEujKV"}
2021-07-01T17:04:12.492Z        debug   client/client.go:120    neo client invoke       {"method": "put", "tx_hash": "64a265d12bc195859b44c55b92dcd8e06037289dfeaf32102cba0c61242fa03b"}

As you can see this container contains zero storage groups, however it produces audit result. Is is expected?
/cc @cthulhu-rider @realloc

[realloc]

I don't think that a container without storage groups has to pass audit. Looks like a bug.

[cthulhu-rider]

I guess it was done to prove that container was processed by IR, not ignored.