Adjust accessors to pull values from attributes if they exist

This has to be done because using multiple queries in a select statement does not automatically map into an ActiveRecord model and the values we want wait in the `self.attributes` hash.

app/models/answer.rb

@@ -71,4 +71,8 @@ class Answer < ApplicationRecord
   def long? = content.length > SHORT_ANSWER_MAX_LENGTH
 
   def pinned? = pinned_at.present?
+
+  def has_reacted = self.attributes["has_reacted"] || false
+
+  def is_subscribed = self.attributes["is_subscribed"] || false
 end