autocomplete rule should ignore readonly fields

[WilcoFiers]

Axe-core's autocomplete-valid rule should not fail on readonly fields. If a field is readonly it cannot be used for user input.

<input readonly autocomplete="some invalid value" />

[padmavemulapati]

Verified with the latest fix, when the autocomplete input box is built with the readonly property, it cannot be used for user input. So that this is not considered a failure, but even it is not a pass, it should be inapplicable
for the script - <input readonly autocomplete="some invalid value" />
Below is the behavior:

Screen.Recording.2025-09-23.at.1.30.33.PM.mov