Improve IllegalStateException

[AlfredoG87]

Problem

Currently we are logging an error and throwing an exception, when we received block_items before a block_header, however we should re-consider it and properly handle this exception once we have a message subsystem in place.

Solution

We need to consider this scenario as part of MessageSubsystem and we should improve on this and remove the todo once the message subsystem is in place.

depends on this issue: #451

Alternatives

No response