desht/ModularRouters#239

Modular Routers just does a standard capability query on the block for an item handler. A quick check with a debugger shows that the pedestal doesn't have a registered item handler, so that's on Ars Nouveau to support, if the mod author wishes to do so.

(If you're wondering why the vanilla hopper works, it's because the pedestal implements Container, so looks like an inventory to vanilla block entities. But mods are under no obligation to support that, and I have no intention of supporting anything other than capability-based item transfer)