Add emoji_reactioned_by_slim api (not work)

app/models/status_emoji_reactions_grouped_by_account_object.rb

@@ -0,0 +1,14 @@
+class StatusEmojiReactionsGroupedByAccountObject
+  def initialize(account, emoji_reactions)
+    @account = account
+    @emoji_reactions = emoji_reactions
+  end
+
+  def read_attribute_for_serialization(_)
+    REST::EmojiReactedBySlimSerializer
+  end
+
+  def model_name
+    'EmojiReaction'
+  end
+end