FIX: If `fancy_title` was nil the job would fail

This is because we were only selecting `fancy_title` from the DB
and the method has a fallback.

lib/pending_assigns_reminder.rb

@@ -35,7 +35,7 @@ class PendingAssignsReminder
   end
 
   def assigned_topics(user, order:)
-    Topic.joins(:_custom_fields).select(:slug, :id, :fancy_title, 'topic_custom_fields.created_at AS assigned_at')
+    Topic.joins(:_custom_fields).select(:slug, :id, :title, :fancy_title, 'topic_custom_fields.created_at AS assigned_at')
       .where('topic_custom_fields.name = ? AND topic_custom_fields.value = ?', TopicAssigner::ASSIGNED_TO_ID, user.id.to_s)
       .order("topic_custom_fields.created_at #{order}")
       .limit(3)

spec/lib/pending_assigns_reminder_spec.rb

@@ -33,6 +33,7 @@ RSpec.describe PendingAssignsReminder do
 
       @post1 = Fabricate(:post)
       @post2 = Fabricate(:post)
+      @post2.topic.update_column(:fancy_title, nil)
       @post3 = Fabricate(:post)
       TopicAssigner.new(@post1.topic, user).assign(user)
       TopicAssigner.new(@post2.topic, user).assign(user)