Rarity of loot on multiple tables is not calculated correctly

[jack0lantern]

My buddy kept getting rune spear notifications from basilisk knights because the plugin thinks the rarity is 1/13312. But the item is on 2 tables, the main roll is 1/52, and then the gem table has it at 1/13312

So the rarity should actually be 1/52 + 1/13312

[iProdigy]

Example logic to account for multiple drop rates: https://github.com/iProdigy/DinkPlugin/blob/88331ec8f35cface89444d6c4575a0e5127c439e/src/main/java/dinkplugin/util/NpcDropTable.java#L33-L40