Oops, "fits:blue-acara" search should return non-body-specific items

Idk when this regressed exactly, but probably people didn't super
notice because I don't think it's a very common thing to type directly
into the Infinite Closet search box! (It used to be crucial to the old
wardrobe app.)

But I'm using it in the wardrobe app again now, so, fixed!

app/models/item.rb

@@ -87,8 +87,7 @@ class Item < ApplicationRecord
     where("NOT (#{condition})", *zone_ids)
   }
   scope :fits, ->(body_id) {
-    sa = SwfAsset.arel_table
-    joins(:swf_assets).where(sa[:body_id].eq(body_id)).distinct
+    joins(:swf_assets).where(swf_assets: {body_id: [body_id, 0]}).distinct
   }
   scope :not_fits, ->(body_id) {
     i = Item.arel_table