fix: missing callback ActionNotFound exception

missing callback actions is the new default in rails. We're ignoring this default in production environments, but keeping it enabled in dev and test so that we can fix errors as they arise.

here's what the error looks like
```
15:30:41 web.1  | AbstractController::ActionNotFound - The edit action could not be found for the :set_transfer_request
15:30:41 web.1  | callback on TransferRequestsController, but it is listed in the controller's
15:30:41 web.1  | :only option.
15:30:41 web.1  | Raising for missing callback actions is a new default in Rails 7.1, if you'd
15:30:41 web.1  | like to turn this off you can delete the option from the environment configurations
15:30:41 web.1  | or set `config.action_controller.raise_on_missing_callback_actions` to `false`.
```

app/controllers/transfer_requests_controller.rb

@@ -1,6 +1,6 @@
 class TransferRequestsController < ApplicationController
   before_action :set_transfer_request,
-                only: %i[edit update destroy show confirm]
+                only: %i[destroy confirm]
   def index
     @transfer_requests_to =
       TransferRequest.where(to_group_id: current_user.id)