FEATURE: show silence reason when viewing silenced users (#30635)

This adds the Silence Reason column to silenced user lists.

This feature helps combat large spam attacks cause you can quickly see
why a user was silenced and then bulk act on all the silenced users

app/controllers/admin/users_controller.rb

@@ -32,7 +32,7 @@ class Admin::UsersController < Admin::StaffController
   def index
     users = ::AdminUserIndexQuery.new(params).find_users
 
-    opts = { include_can_be_deleted: true }
+    opts = { include_can_be_deleted: true, include_silence_reason: true }
     if params[:show_emails] == "true"
       StaffActionLogger.new(current_user).log_show_emails(users, context: request.path)
       opts[:emails_desired] = true