sys-usb option enabled in installer even if sys-usb will not be created

[nestire]

How to file a helpful issue

Qubes OS release

4.1.1

Brief summary

The installer disables the sys-usb option if you using a usb keyboard but not the sub options. if you enable these you can't create sys-usb after that as described in the Documentation see also https://forum.qubes-os.org/t/error-creating-sys-usb/7281 seems to be related to https://github.com/QubesOS/qubes-issues/issues/6754

Steps to reproduce

Vanilla Install on a PC with just one USB Controller + usb Keyboard -> Initial Setup Stage

Expected behavior

All Options regarding sys-usb should be disabled or add an option that enables the usb keyboard sys-usb config

Actual behavior

Users are able to choose these options without any effect other then it's prevents easy enabling sys-usb later