INSPIRE service taxonomy keywords doesn't validate against INSPIRE ETF validator

According to INSPIRE TG:

"TG Requirement 3.4: metadata/2.0/req/sds/sds-category
At least one Spatial Data Service category or subcategory for the described service shall be given using the language-neutral keyword values as defined in Part D 4 “Classification of Spatial Data Services” of [Regulation 1205/2008]."

Keywords are expected to use the language-neutral value like:

```

humanCatalogViewer

```

But loading the thesaurus from the `Registry` option in `Classification systems` and adding the keywords in the editor, the values added use the metadata main language:

```

Catalogue viewer

```

This is fine for other thesaurus, but not for this one. To check if any post-processing can be applied in `update-fixed-info` process to fix the values for this specific thesaurus.

Start with the update-fixed-info process and the Registry option used to load the Spatial Data Service Category thesaurus. Compare the generated language-neutral keyword value with the localized label shown in the issue, then verify that the resulting metadata is accepted by the INSPIRE ETF validator.

Written by the indexing model from the issue text.