FEATURE: Add message to bulk close topics (#26535)

This will allow you to type a single message when bulk closing topics
that will be applied to every topic, that way they all have the same
message.

app/controllers/topics_controller.rb

@@ -1010,6 +1010,7 @@ class TopicsController < ApplicationController
           :group,
           :category_id,
           :notification_level_id,
+          :message,
           *DiscoursePluginRegistry.permitted_bulk_action_parameters,
           tags: [],
         )