libinput-gestures-qt (Qt-based GUI for libinput-gestures) is preinstalled. This was already the case in the
release and is still the case today.
The same applies to Qt Assistant, Qt D-Bus Viewer, Qt Linguist, and Qt Widgets Designer. These are part of the qt6-tools package, which is also preinstalled and required by KDE Plasma - do not remove this package.
The Qt V4L2 test utility and Qt V4L2 video capture utility are part of the v4l-utils package, which is also preinstalled and required by ffmpeg, for example.