Fix a flaky ActiveRecord finders test

Author: fatkodima

activerecord/test/cases/finder_test.rb

@@ -18,6 +18,7 @@
 require "models/customer"
 require "models/toy"
 require "models/matey"
+require "models/dog_lover"
 require "models/dog"
 require "models/car"
 require "models/tyre"