Bug 506915

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SUMMARY
As mentioned in [this TWIP](https://pointieststick.com/2024/02/09/this-week-in-kde-inching-closer/), active screen should be determined by the cursor; but instead the active window is the one which contains last interacted window.

STEPS TO REPRODUCE
1. Set-up multi-monitor setup
2. Click window on 1st monitor
3. Move cursor to 2nd monitor
4. Open a new app (via e.g. Application Launcher)

OBSERVED RESULT
App opens on 1st monitor, where the previously interacted window is

EXPECTED RESULT
App opens on 2nd monitor, where the mouse cursor is present


SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.4.2
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.15.5-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 12 × 13th Gen Intel® Core™ i5-13420H
Memory: 32 GiB of RAM (31,1 GiB usable)
Graphics Processor 1: Mesa Intel® Graphics
Graphics Processor 2: llvmpipe
Manufacturer: LENOVO
Product Name: 82XV
System Version: LOQ 15IRH8