hi-noun and ur-noun

This should do it.

That's not exactly what I had in mind and your edit only worked on Arabic language and Devanagari script. What I meant was that in the actual templates themselves, when the spelling in the other script is provided, it shouldn't be bolded when it is wikified. Otherwise, as a headword, it's fine to be bolded.

I do not get it. If emboldening hurts legibility, why allow it anywhere? And if it does not, why make an exception for script variants?

I'm sorry if I confused you. I think it was just my browser that's been acting funny the last few days.