[10.x] Minor skeleton slimming (#6159)

* remove rate limiter from route provider by default

* remove policy place holder

* remove broadcast skeleton in favor of new provider in core

* use default provider collection

* Remove unnecessary properties from exception handler.

* add back broadcast provider

* update comment

* add rate limiting

* Apply fixes from StyleCI

* fix formatting

---------

Co-authored-by: StyleCI Bot <bot@styleci.io>

app/Exceptions/Handler.php

@@ -8,25 +8,7 @@ use Throwable;
 class Handler extends ExceptionHandler
 {
     /**
-     * A list of exception types with their corresponding custom log levels.
-     *
-     * @var array<class-string<\Throwable>, \Psr\Log\LogLevel::*>
-     */
-    protected $levels = [
-        //
-    ];
-
-    /**
-     * A list of the exception types that are not reported.
-     *
-     * @var array<int, class-string<\Throwable>>
-     */
-    protected $dontReport = [
-        //
-    ];
-
-    /**
-     * A list of the inputs that are never flashed to the session on validation exceptions.
+     * The list of the inputs that are never flashed to the session on validation exceptions.
      *
      * @var array<int, string>
      */