[bug] installer shows encrypted ZFS support, but it doesn't work

for some reason github won't show me the bug report template, even though it's present under the issue templates. not sure why.

in any case, just trying cachy for the first time, I've heard good things. I use ZFS encrypted root on a lot of my systems, so it was lovely to see that as an option in the installer, but the installer failed when trying to use it. looks like from the error in the install log that the zfs support on the ISO isn't built with encryption support? or maybe just that the installer doesn't have support for it yet, even though it showed me the encryption option on the "erase my disk" stage. I'm unsure.

https://termbin.com/hnkow

```
2025-03-06 - 13:03:59 [6]: .. Target cmd: QList("zpool", "create", "-f", "-o", "ashift=12", "-o", "autotrim=on", "-o", "compatibility=grub2", "-O", "mountpoint=none", "-O", "acltype=posixacl", "-O", "atime=off", "-O", "relatime=off", "-O", "xattr=sa", "-O", "normalization=formD", "-O", "encryption=aes-256-gcm", "-O", "keyformat=passphrase", "zpcachyos", "/dev/sda1") Exit code: 1 output:
cannot create 'zpcachyos': Encryption feature not enabled.
```

this was from install ISO 250202.

I'd love to see this feature added, but it's probably a good idea to remove the encryption checkbox from the installer when zfs is selected until it actually works.