bug(StartingInventory): nesting items not working for trunk block

[skaldarnar]

So, seemingly CoreAdvancedAssets:Trunk is an item/block that holds an inventory and thus should be able to be filled with items in a starting inventory:

{
  "uri": "CoreAdvancedAssets:Trunk",
    "items": [
      { "uri": "CoreAssets:Cobblestone", "quantity": 99 }
    ]
}

However, the item trunk.prefab does not have an InventoryComponent - only the trunkRegion.prefab does. However, the inventory will be retained via RetainBlockInventory when a trunk placed in the world is destroyed.

I don't know whether this is a restriction of the StartingInventorySystem or due to the structure of prefabs used to build the trunk functionality. I would suspect that we may to be able to make it behave better by having another look at the prefabs, but I'm not entirely sure about this - pinging @Qwertygiy for their opinion.

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Related to Terasology/CoreAdvancedAssets