fix: fix changing user agent issue on headless mode

[Amirmahdikahdouii]

Fix not changing navigator.userAgent property on headless mode

Problem

The problem was that by setting headless=True, navigator.webdriver is equal to False so the changes on navigator.userAgent couldn't commit due to it is under the condition that navigator.webdriver should return True.

Solution

I separated the modification part of navigator.userAgent and put it in a separated method and then call it at top of configure headless method.

Note

My Chrome version is 134.0.0 and I'm using Python 3.12