Change custom emoji search to ILIKE instead of = (#7099)

app/models/custom_emoji.rb

@@ -58,5 +58,9 @@ class CustomEmoji < ApplicationRecord
 
       where(shortcode: shortcodes, domain: domain, disabled: false)
     end
+
+    def search(shortcode)
+      where('"custom_emojis"."shortcode" ILIKE ?', "%#{shortcode}%")
+    end
   end
 end

app/models/custom_emoji_filter.rb

@@ -28,7 +28,7 @@ class CustomEmojiFilter
     when 'by_domain'
       CustomEmoji.where(domain: value)
     when 'shortcode'
-      CustomEmoji.where(shortcode: value)
+      CustomEmoji.search(value)
     else
       raise "Unknown filter: #{key}"
     end