[BUG] Loot capacitors have invalid modifier

[tyler489]

The bug
Loot capacitors are generating with a tooltip.capacitor.fixed tag

To Reproduce
Steps to reproduce the behavior:
Spawn a chest with the command /give @s chest{BlockEntityTag:{LootTable:"minecraft:chests/simple_dungeon"}}

[tyler489]

How about a configurable blacklist for modifiers, and add fixed to it by default. that way if a pack dev disables the generators, they can disable the loot caps that go with the generator. All modifiers other than global cap level can be disabled