Check ETOX possible schema change

[stitam]

Something is off with ETOX, ping passes, examples don't fail but many tests do.

I looked into one of the examples, and the result is NA:

webchem::get_etoxid("Triclosan", match = "best")
#> # A tibble: 1 × 3
#>   query     match etoxid
#>   <chr>     <lgl> <lgl> 
#> 1 Triclosan NA    NA

^{Created on 2026-02-27 with reprex v2.1.1}```

ETOX URL redirects to this website: https://recherche.chemikalieninfo.de/etox

The layout of this website if different from the ETOX site I remember. I am guessing the webservice is still available but the schema has changed. I disabled ETOX tests in PR #450, for now.

Does anyone have more information on this?