[Error] Mandates use of man and prevents from the automatic installation of mandoc

**Describe the bug**

https://github.com/89luca89/distrobox/blob/main/distrobox-init#L1674

It seems to me that `distrobox init` here mandates `man`? I am a maintainer of `mandoc` in openSUSE and I would prefer it. However, when [I have it inside of the container](https://build.opensuse.org/projects/home:mcepl:moldavite/packages/distrobox-mcepl-packaging/files/Dockerfile?expand=1) (line 62), `distrobox init` breaks it with this.

**To Reproduce**
Try to have `mandoc` as manpage viewer in the Docker container-to-be-used-by-distrobox

Add `RUN zypper --non-interactive install --no-confirm --force-resolution -man mandoc` to your Dockerfile.

**Expected behaviour**
`distrobox enter` enters into a container with `mandoc` instead of `GNU/man`

**Observed behaviour**
`distrobox enter` (after `distrobox assemble create`) fails in the `Installing packages` phase.

```
Problem: 1: the installed mandoc-1.14.6-7.2.x86_64 conflicts with 'man' provided by the to be installed man-2.13.1-4.1.x86_64
Solution 1: deinstallation of mandoc-1.14.6-7.2.x86_64
Solution 2: do not install man-2.13.1-4.1.x86_64

Choose from above solutions by number or cancel [1/2/c/d/?] (c): c
+ '[' 4 = 106 ']'
+ '[' 1 -ne 0 ']'
+ printf 'Error: An error occurred\n'
Error: An error occurred
```

**Logs**
Run the commands with `--verbose` and post the log here as a file upload
Attach also the output of `podman logs` or `docker logs`, possibly with `--latest` flag

**Desktop (please complete the following information):**

- Are you using podman, docker or lilipod? `podman`
- Which version or podman, docker or lilipod? `5.8.1`
- Which version of distrobox? `1.8.2.4`
- Which host distribution? openSUSE/MicroOS-based
- How did you install distrobox? openSUSE package

[Complete build log](https://github.com/user-attachments/files/26241579/_log.txt)