FIX: Render detailed_404 page from 403 responses

This was previously broken by 59ef48c0b9 (#11425, #11424).

Centralize the logic into the exception controller, which avoids the problematic bug and makes it easy to add additional detailed 404 pages in the future.

app/controllers/categories_controller.rb

@@ -214,6 +214,7 @@ class CategoriesController < ApplicationController
           'not in group',
           @category,
           custom_message: 'not_in_group.title_category',
+          custom_message_params: { group: group.name },
           group: group
         )
       else