Fix filter not updating after nbt deserialize

src/main/kotlin/ru/dbotthepony/mc/otm/container/ItemFilter.kt

@@ -265,6 +265,10 @@ class ItemFilter(
 			for ((i, value) in it.withIndex()) {
 				if (value is CompoundTag) {
 					filter[i] = ItemStack.of(value)
+
+					if (!filter[i].isEmpty) {
+						linkedFilter.add(filter[i])
+					}
 				}
 			}
 		}