FIX: Category permission change not creating a log (#20027)

It didn't create a log if the category was public { "everyone" => 1 }

app/controllers/categories_controller.rb

@@ -196,6 +196,7 @@ class CategoriesController < ApplicationController
       category_params[:minimum_required_tags] = 0 if category_params[:minimum_required_tags]&.blank?
 
       old_permissions = cat.permissions_params
+      old_permissions = { "everyone" => 1 } if old_permissions.empty?
 
       if result = cat.update(category_params)
         Scheduler::Defer.later "Log staff action change category settings" do