`-only` and `-json` don't work together, `-only fuse` doesn't work at all

To Reproduce

json not filtering:

1. run duf -only local -json or duf -only special -json
2. observe all devices being printed in the json (for me that is special, local and fuse)

only fuse not working:

1. run duf -all
2. see some (for me one) fuse file systems
3. run duf -only fuse
4. observe nothing being printed

System Information

$ duf --version
duf 0.8.1
$ uname -a
Linux venquore 6.10.3 #1-NixOS SMP PREEMPT_DYNAMIC Sat Aug  3 07:01:09 UTC 2024 x86_64 GNU/Linux
$ nixos-version
24.11.20240811.a58bc8a (Vicuna)