Fix user settings migration script failing in some cases (#24453)

db/migrate/20230215074423_move_user_settings.rb

@@ -52,7 +52,7 @@ class MoveUserSettings < ActiveRecord::Migration[6.1]
     end
 
     def value
-      YAML.safe_load(self[:value], permitted_classes: [ActiveSupport::HashWithIndifferentAccess]) if self[:value].present?
+      YAML.safe_load(self[:value], permitted_classes: [ActiveSupport::HashWithIndifferentAccess, Symbol]) if self[:value].present?
     end
   end