Assuming they keep it as part of the Falcon, when scaled down to toy size, it's nothing, unrecognizably tiny. A toy would likely be based on a CG model or the existing models, so it's unlikely it would be included anyway. As it is, every Millennium Falcon model has been replicating existing parts of other people's models which are much bigger, and it's never been an issue as far as I'm aware.
I'd be surprised if it's even noticeable in the final movie either. Had it not been pointed out, it would probably have forever remained unknown.