MarkupNP marks s, clit and prep, since in Czech these are alternative
surface forms of a pronoun chosen by context, as in MarkupRomance.
The nominative clitic is left alone: it is the pro-drop subject, empty
for every personal pronoun, so marking it up gave "<b> </b> je starý".
Inherit MarkupCze in LangCze, as LangFin does; stringMark is excluded
because abstract Lang already excludes it.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
