[tombi] Linter used as formatter and formatter does not update buffer

## Information

**9.2.0511**

VIM - Vi IMproved 9.2 (2026 Feb 14 kompiliert am May 22 2026 18:43:08)
Inklusive der Patches: 1-511

Operating System: Arch Linux

## What went wrong

`tombi_lint` is used as a formatter. Why is this? I think this is completely wrong. The output are warning messages which are simply written to the buffer. This makes no sense.

`tombi_format` does not work properly. When saving the buffer ist not updated. The result is only written to the file. Moreover in case of an error, the error message is written to the buffer.

## Reproducing the bug

### :ALEInfo

Expand
finished - exit code 0) ['/bin/zsh', '-c', '''tombi'' format --offline < ''/tmp/viuWalG/4/tex-fmt.toml''']

### Related

- https://github.com/dense-analysis/ale/pull/5022
- https://github.com/dense-analysis/ale/issues/5023 regarding language server which is broken too