refactor(phpstan): simplify boolean condition in autoloadafter attribute

Changed the boolean condition to check for false on `autoloadAfter` attribute. Instead of checking
equality with false, the code now uses a not operator which makes it easier to read and follow.
This change has been applied to both `ProductList.php` and `ManufacturerList.php` files.

src/QUI/ERP/Products/Controls/Category/ProductList.php

@@ -144,7 +144,7 @@ public function getBody(): string
         }
 
         // global settings: product autoload after x clicks
-        if ($this->getAttribute('autoloadAfter') == '' || $this->getAttribute('autoloadAfter') === false) {
+        if ($this->getAttribute('autoloadAfter') == '' || !$this->getAttribute('autoloadAfter')) {
             $this->setAttribute('autoloadAfter', $Config->get('products', 'autoloadAfter'));
         }
 

src/QUI/ERP/Products/Controls/ManufacturerList/ManufacturerList.php

@@ -49,7 +49,7 @@ public function getBody(): string
         $Config = QUI::getPackage('quiqqer/products')->getConfig();
 
         // global settings: product autoload after x clicks
-        if ($this->getAttribute('autoloadAfter') == '' || $this->getAttribute('autoloadAfter') === false) {
+        if ($this->getAttribute('autoloadAfter') == '' || !$this->getAttribute('autoloadAfter')) {
             // @todo get setting from site
             $this->setAttribute('autoloadAfter', $Config->get('products', 'autoloadAfter'));
         }