Ensure all existing tests pass and possibly create new ones

[greyfiles]

Because this is simply a refactoring project, no functionalities should change. Therefore, existing tests should still pass after these changes have been completed. To test this controller, create a new rspec file for password_retrieval_controller.rb if not present in the spec folder and run the following commands to verify your changes do not break any core functions.

rspec spec/controllers/password_retrieval_controller_spec.rb