Decorated Pot rendered invalid pattern if "sherds" data contains non-brick or pattern items.

[SteveKunG]

As title said, Vanilla allows to modify Decorated Pot "sherds" to any item other than Brick item.

To reproduce:

1. Use /give @p decorated_pot{BlockEntityTag:{sherds:["minecraft:stone","minecraft:stone","minecraft:stone","minecraft:stone"]}}
2. Then place in your world.
3. Decorated Pot display invalid patterns.

Expected Result: It should be render empty faces.