[fix] Replace lucidity sash item mod with the correct "perp reduction" ID

[wccbuck]

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What does this pull request do?

The item "Lucidity Sash" is supposed to have avatar perpetuation cost -2, which is mod ID 346, but it instead had mod ID 371 "AVATAR_PERPETUATION" which is only used internally, not on items.

Steps to test these changes

Summon an avatar, equip lucidity sash (item ID 28416), see your perp cost go down by 2