If you are willing to accept the risks described in QSB-091, you may still install the previous version 4.1.68-1 of QWT, which is still available from https://yum.qubes-os.org/r4.1/current/dom0/fc32/rpm/qubes-windows-tools-4.1.68-1.noarch.rpm.
After downloading the rpm file and installing it in dom0 via sudo dnf install, proceed as described in Installing and Using Qubes Windows Tools in Qubes R4.1.