plasma-desktop is not a protected package

Info:

On Kubuntu, when removing a installed program from discover that requires removing plasma-desktop is allowed to continue with a password, even though it should be a protected package. I don't think it is user friendly, because a lot of new users ignore confirmation prompts and warnings.

Steps to reproduce:

1. Open Discover

2. Click installed

3. Try to remove a kde desktop program (e.g. KDE Plasma Desktop - System monitor sensor)

4. It will prompt a confirmation that it will remove plasma-desktop and other kde plasma stuff

Observed Result:
Discover is allowed to remove plasma-desktop, which removes parts of kde plasma

Expected Result:
Discover should not be allowed to remove plasma-desktop, due to plasma-desktop being a protected package

Package Version: plasma-desktop 4:5.25.5-0ubuntu1

Operating System Info:

Operating System: Kubuntu 22.10
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Kernel Version: 5.19.0-23-generic (64-bit)
Graphics Platform: X11
Processors: 2 × AMD Ryzen 5 3450U with Radeon Vega Mobile Gfx
Memory: 2.9 GiB of RAM
Graphics Processor: virgl
Manufacturer: QEMU
Product Name: Standard PC (Q35 + ICH9, 2009)
System Version: pc-q35-6.2

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: plasma-desktop 4:5.25.5-0ubuntu1
ProcVersionSignature: Ubuntu 5.19.0-23.24-generic 5.19.7
Uname: Linux 5.19.0-23-generic x86_64
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Sat Nov 26 09:21:42 2022
InstallationDate: Installed on 2022-11-18 (7 days ago)
InstallationMedia: Kubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: plasma-desktop
UpgradeStatus: No upgrade log present (probably fresh install)