Fix touch screen events on Linux being misattributed to the main window

[alexkar598]

Simple test case:
TouchTestCaseSrc.zip

System info on the machine i tested with

Operating System: Arch Linux
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.3
Kernel Version: 6.11.1-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5825U with Radeon Graphics
Memory: 15.0 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: Dell Inc.
Product Name: Inspiron 16 5625
System Version: 1.10.0

Fixes #77653

[Sauermann]

I would like to ask you to split your PR into two separate PRs, one for each bug. This would make it easier to review each change and would make it easier to handle regressions.

[alexkar598]

I would like to ask you to split your PR into two separate PRs, one for each bug. This would make it easier to review each change and would make it easier to handle regressions.

I split off the mouse emulation fix to another pr #98318 . That being said, the windows users(for who mouse emulation goes to the wrong window) in #77653 are not experiencing the same bug as the Linux users (who straight up don't receive the touch events in the right window)

[bruvzg]

Can't reproduce the issue, tested on PopOS 22.04 with touchscreen and Wacom table. It seems to work the same with or without this change.

[alexkar598]

Can't reproduce the issue, tested on PopOS 22.04 with touchscreen and Wacom table. It seems to work the same with or without this change.

Heres a recording of the issue before and after the fix

linux_broken.mp4

linux_fixed.mp4