fix(phpstan): remove unnecessary phpstan ignore line in eventhandling

This commit removes a redundant phpstan ignore comment which was situated above an if statement in
the EventHandling.php file, in the setDefaultProductFields function. The ignore command was not
necessary and hence has been excluded to improve the readability and reduce unnecessary code.

src/QUI/ERP/Products/EventHandling.php

@@ -879,7 +879,6 @@ protected static function setDefaultProductFields(): void
 
             // update system fields
             if (isset($result[0])) {
-                // @phpstan-ignore-next-line
                 if ((int)$field['id'] > 1000) {
                     continue;
                 }