Fedora-36: Null Names for a Virtual Desktop Locks up the System

[Jonathan Ryshpan]

Here's what I did:
 * Invoked System Settings -> Workspace Behavior -> Virtual Desktops
 * Set the name of a desktop to null using the pen and backspace key
 * Hit Apply
The system is now well and truly locked up; the best way out seems to
be a reboot.

System is:
   Operating System: Fedora Linux 36
   KDE Plasma Version: 5.24.5
   KDE Frameworks Version: 5.93.0
   Qt Version: 5.15.3
   Kernel Version: 5.17.13-300.fc36.x86_64 (64-bit)
   Graphics Platform: X11
   Processors: 8 × Intel® Core™ i7-4790K CPU @ 4.00GHz
   Memory: 15.4 GiB of RAM
   Graphics Processor: Mesa Intel® HD Graphics 4600