- Fixes https://github.com/termux/termux-packages/issues/23605
- brings termux-apt to have feature-parity with termux-pacman, since termux-pacman always shows these warnings if unofficial packages are detected:
```
warning: htop: local (3.2.1-1) is newer than extra (3.2.0-1)
```
that capability of termux-pacman is inherited from the distro Arch Linux through `pacman`.
however, without the command `apt-show-versions`, it is very difficult to identify and remove packages that are in the same situation in termux-apt.
Example output on a device that became filled with a mess of unofficial packages:
```
~ $ apt-show-versions | grep -e "newer than" -e "No available"
apt-show-versions:all 0.22.16 installed: No available version in archive
arpack-ng:aarch64 1:3.9.0-1 newer than version in archive
blender:aarch64 1:3.6.23 installed: No available version in archive
blender4:aarch64 4.5.2 installed: No available version in archive
code-server:aarch64 4.101.2 installed: No available version in archive
electrum:all 4.5.8-3 newer than version in archive
elisa:aarch64 25.08.0 installed: No available version in archive
embree:aarch64 4.4.0 installed: No available version in archive
frida:aarch64 17.2.11-1 installed: No available version in archive
frida-dev:aarch64 17.2.11-1 installed: No available version in archive
frida-python:aarch64 17.2.11-1 installed: No available version in archive
gjs:aarch64 1.84.2 installed: No available version in archive
glew:aarch64 2.2.0-13 newer than version in archive
hash-slinger:all 3.4-1 newer than version in archive
libspnav:aarch64 1.2 installed: No available version in archive
libspnav-static:aarch64 1.2 installed: No available version in archive
libxcb-errors:aarch64 1.0.1 installed: No available version in archive
libxcb-errors-static:aarch64 1.0.1 installed: No available version in archive
lv2:aarch64 1.18.10-6 newer than version in archive
manim:aarch64 0.19.0-3 newer than version in archive
materialx:aarch64 1.39.3 installed: No available version in archive
nala:all 0.16.0-1 newer than version in archive
ndk:all 27b installed: No available version in archive
nodejs-22:aarch64 22.15.1 installed: No available version in archive
openshadinglanguage:aarch64 1.14.6.0 installed: No available version in archive
orca:all 48.6-1 newer than version in archive
pyqt5:aarch64 5.15.11-2 newer than version in archive
pyside6:aarch64 6.9.1 installed: No available version in archive
pyside6-tools:aarch64 6.9.1 installed: No available version in archive
python-opengl:all 3.1.6-2 installed: No available version in archive
python-scipy:aarch64 1:1.16.0 newer than version in archive
python-tldp:all 0.7.5-6 newer than version in archive
python-xlib:all 0.33-2 newer than version in archive
qrupdate-ng:aarch64 1:1.1.5-1 newer than version in archive
rdircd:all 2023.02.07-2 newer than version in archive
shiboken6:aarch64 6.9.1 installed: No available version in archive
squashfs-tools:aarch64 4.2-p20130326-0 installed: No available version in archive
srt2vobsub:all 1.0-5 newer than version in archive
suitesparse:aarch64 1:7.9.0 newer than version in archive
sundials:aarch64 1:7.4.0 newer than version in archive
supertux-data:all 0.6.3 installed: No available version in archive
termux-gui-package:all 0.1.6-3 newer than version in archive
termux-gui-pm:all 1.0.0-3 newer than version in archive
termux-wsi-layer:aarch64 0.0.1 installed: No available version in archive
usd:aarch64 25.05.01 installed: No available version in archive
xfce4-panel-profiles:all 1.1.1-2 newer than version in archive
ytui-music:aarch64 2.0.0-beta-3 newer than version in archive
zmap:aarch64 1:4.3.2 installed: No available version in archive
~ $
```
while the best solution is arguably to never install unofficial packages in the first place, once they have already been installed, the next best solution is to have some way to efficiently get rid of them without having to completely uninstall Termux and clean install a new Termux.
