trade_rebalance loot tables have a wrong type

Expected

Loot tables for the bundled trade_rebalance packs have the minecraft:chest type.

Actual

Loot tables for the packs have the minecraft:entity type.

Steps to reproduce

1. Open the JAR file
2. Check any file under /data/minecraft/datapacks/trade_rebalance/data/minecraft/loot_tables/chests/
3. The type will be minecraft:entity instead of minecraft:chest