[9.x] Cast $perPage to integer on Paginator (#41073)

* Cast $perPage to integer

* Apply casting to CursorPaginator as well

Author: gdebrauwer

src/Illuminate/Pagination/CursorPaginator.php

@@ -37,7 +37,7 @@ public function __construct($items, $perPage, $cursor = null, array $options = [
             $this->{$key} = $value;
         }
 
-        $this->perPage = $perPage;
+        $this->perPage = (int) $perPage;
         $this->cursor = $cursor;
         $this->path = $this->path !== '/' ? rtrim($this->path, '/') : $this->path;
 

src/Illuminate/Pagination/LengthAwarePaginator.php

@@ -46,7 +46,7 @@ public function __construct($items, $total, $perPage, $currentPage = null, array
         }
 
         $this->total = $total;
-        $this->perPage = $perPage;
+        $this->perPage = (int) $perPage;
         $this->lastPage = max((int) ceil($total / $perPage), 1);
         $this->path = $this->path !== '/' ? rtrim($this->path, '/') : $this->path;
         $this->currentPage = $this->setCurrentPage($currentPage, $this->pageName);