prevent N+1 when loading custom emojis

app/models/emoji.rb

@@ -84,7 +84,7 @@ class Emoji
   def self.load_custom
     result = []
 
-    CustomEmoji.order(:name).all.each do |emoji|
+    CustomEmoji.includes(:upload).order(:name).find_each do |emoji|
       result << Emoji.new.tap do |e|
         e.name = emoji.name
         e.url = emoji.upload&.url