Item testing form ignores empty status code input

HTTP agent allows to turn off the status code check by leaving the "Required status codes" input field empty according to the documentation (https://www.zabbix.com/documentation/current/manual/config/items/itemtypes/http).

This works fine for data collection but fails when an item test is performed. Status code is still performed when the "Required status codes" input field is left empty and the item test is executed: