Bug 455939

SUMMARY
If you filter the shown windows in the 'present windows' effect, dismiss the effect, and invoke it again, the fliter string is still there. Expected behaviour is that it should be cleared when the effect is dismissed (like in the overview effect).

STEPS TO REPRODUCE
1. Invoke 'present windows'
2. Type anything to filter the shown windows
3. Dismiss the effect (either press 'esc' or click on a window)
4. Invoke 'present windows'

OBSERVED RESULT
The filter string you typed in step 2 is still present in step 4

EXPECTED RESULT
Step 4 should show the unfiltered list of windows.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.25.1
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5
Kernel Version: 5.18.5-arch1-1 (64-bit)
Graphics Platform: X11

ADDITIONAL INFORMATION
The current behviour is confusing. Sometimes I filter the shown windows and select the one I want. When I invoke present windows again later, I don't notice that the filter string is still there, and I spend a few seconds wondering why some of my windows are missing.