Use TileState for ContainerTrust protection

[RoboMWM]

As a developer
I want GP to use TileState to determine whether to protect an inventory-based block
So that there is no need to update GP when new block-based inventories are released.

This is in essence a "chore" type task given that it's a refactor, but it could be made into a feature since it would "automatically support all current and future block-based inventories without an update."

Which in that case the why can be rewritten into something like this:

As a server admin
I want GP to protect all block-based inventories without requiring updates for new blocks
So that I don't have to worry about updating GP when I update my server

Not a very good/strong why, but that's the best I can come up with offhand. So maybe I should just make a "chore" label.

Oh wait, I do have such a label, I just remembered. "Improvement."

#642 (comment) has some good ideas