DEV: Remove badge_granted_title column from user_profiles (#20476)

That column is obsolete since we added the `granted_title_badge_id` column in 2019 (56d3e29a69). Having both columns can lead to inconsistencies (mostly due to old data from before 2019).

For example, `BadgeGranter.revoke_ungranted_titles!` doesn't work correctly if `badge_granted_title` is `false` while `granted_title_badge_id` points to the badge that is used as title.

app/models/user_profile.rb

@@ -1,6 +1,9 @@
 # frozen_string_literal: true
 
 class UserProfile < ActiveRecord::Base
+  # TODO Remove `badge_granted_title` after 2023-09-01
+  self.ignored_columns = ["badge_granted_title"]
+
   BAKED_VERSION = 1
 
   belongs_to :user, inverse_of: :user_profile
@@ -227,7 +230,6 @@ end
 #  bio_cooked                   :text
 #  dismissed_banner_key         :integer
 #  bio_cooked_version           :integer
-#  badge_granted_title          :boolean          default(FALSE)
 #  views                        :integer          default(0), not null
 #  profile_background_upload_id :integer
 #  card_background_upload_id    :integer