Sorting on the Type column not working as expected

[WillemElbers]

When sorting on the Type column (Clicking on the Type header in the centres table), the sort is not displayed as expected.

The sort is like: [ B, C, K, C, D, E K ]

[MichalGawor]

Centres for which we can link certificate have their type wrapped into <a href> pointing to certificate, otherwise are raw string.
Datatables sorts the contents of the cells including html.

This is won't fix for now, as we plan to scrap DataTables from the project and replace it with Bootstrap5.
Keep the ticket open, as same issue is expected to happen when CLARIN base style is applied.