jena-text highlight fails for simple multilingual queries

Highlighting fails to produce a marked-up literal in default multilingual configurations.

For example, even if there's a hit in the following the marked up literal is empty:

(?s ?sc ?lit) text:query ( "something"@en "highlight:" ) .

The resulting ?lit is ""@en instead of the marked up matching literal, like:

"bar ↦something↤ barfoo foo"@en

The fix does not require text re-indexing.

A PR is available