Created attachment 156425 [details]
Opensuse 15.2 has an auto-disable touchpad function

No auto-disable touchpad function when connecting a mouse

STEPS TO REPRODUCE
1. System Settings 
2. Input Devices
3. Touchpad

OBSERVED RESULT
no function  - Disable touchpad when mouse is plugged in

EXPECTED RESULT
This function is available in OpenSuse 15.2, but not in version OpenSuse 15.4.
The Kubuntu 22.04 operating system also does not have this function.
I looked at the code https://invent.kde.org/plasma/plasma-desktop/-/tree/Plasma/5.24/kcms/touchpad/kded
kded.cpp  -  this message feature is   

if (!newState && disable) {
        showNotification("TouchpadDisabled", i18n("Touchpad was disabled because a mouse was plugged in"));
 
Please add this functionality. I understood that it will be easy for you to add it. I am asking not only for myself, but also for thousands of KDE users.

SOFTWARE/OS VERSIONS

Linux:  OpenSuse 15.4 
KDE Plasma Version:  5.24.4
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
Graphics platform: X11
Driver touchpad: libinput