The border is missing around unfocused floating windows

## I'm submitting a…

[x] Bug

[ ] Feature Request

[ ] Documentation Request

[ ] Other

## Description
I accidentally confused an i3 bug as a Sway bug as I have recently switched over, the issue URL is:
https://github.com/swaywm/sway/issues/7706

## Environment

- i3 version:

Binary i3 version:  4.22 (2023-01-02) © 2009 Michael Stapelberg and contributors


Running version: < 4.2-200

- Linux Distribution & Version:

Numerous, the configuration is very old, Debian, Ubuntu, Artix, Arch Linux, Manjaro, and Devuan.