Notify send displays HTML tags

When Guake terminal is installed, the message alerting the user to press F12 is displayed with HTML markup tags wrapping the F12 text rather than displaying the F12 in bold.

This also applies to all other HTML tags as specified at:

https://www.galago-project.org/specs/notification/0.9/x161.html

[To recreate]

On a terminal, run:

notify-send "This is a <b>bold</b> message"

[Expected behavior]

Notify-send should either interpret the tag or not display it

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: libnotify-bin 0.8.3-1build2
ProcVersionSignature: Ubuntu 6.8.0-22.22-generic 6.8.1
Uname: Linux 6.8.0-22-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 12 17:35:23 2024
InstallationDate: Installed on 2024-04-10 (2 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Beta amd64 (20240410)
ProcEnviron:
 LANG=en_GB.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: libnotify
UpgradeStatus: No upgrade log present (probably fresh install)