Install error results in inconsistent state

When installing a Flutter version without the `xz` binary available, it results in an installation failure, but the requested version is also registered as if the installation was successful:

```
root@337d2c0a2675:~# asdf install flutter 3.16.2-stable
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 626M 100 626M 0 0 30.8M 0 0:00:20 0:00:20 --:--:-- 33.1M
tar (child): xz: Cannot exec: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now

root@337d2c0a2675:~# asdf list flutter
3
*3.16
3.16.1
3.16.1-stable
3.16.2-stable
```

Reproduce `asdf install flutter 3.16.2-stable` in an environment without the `xz` binary, then trace the installation flow that runs before `asdf list flutter`. Done means the failed installation no longer registers the requested Flutter version, while successful installations continue to appear in the list.

Written by the indexing model from the issue text.