[10.x]: add max exceptions to broadcast event (laravel#46800)

src/Illuminate/Broadcasting/BroadcastEvent.php

@@ -42,6 +42,13 @@ class BroadcastEvent implements ShouldQueue
      */
     public $backoff;
 
+    /**
+     * The maximum number of unhandled exceptions to allow before failing.
+     *
+     * @var int
+     */
+    public $maxExceptions;
+
     /**
      * Create a new job handler instance.
      *
@@ -55,6 +62,7 @@ public function __construct($event)
         $this->timeout = property_exists($event, 'timeout') ? $event->timeout : null;
         $this->backoff = property_exists($event, 'backoff') ? $event->backoff : null;
         $this->afterCommit = property_exists($event, 'afterCommit') ? $event->afterCommit : null;
+        $this->maxExceptions = property_exists($event, 'maxExceptions') ? $event->maxExceptions : null;
     }
 
     /**