it can’t be all that common.
my first reaction would be to see the grace as a voice going from upper staff to lower.
in 50 years of piano, I’ve never come across this indication.
If it’s meant to be played on the beat, then I’d far rather see the grace notes displayed as real notes, with whatever speed value will give the best effect.
I also think the diagonal line is non-standard and slightly confusing. Why not use a short trill instead? From the 19th century onwards, it has been the notation of choice for what you want to achieve.
Since you aren’t reprinting a period edition and writing music that is fairly recent, I would suggest sticking to contemporary notation markings.
I’ve played a LOT of 20th century music, and the only time I’ve seen dashed lines skipping from one staff to the next like this is when it was used to indicate a voice moving from one hand to another.
Regardless of whether some editions of Haydn use that notation, it’s not applicable in your case. Write it the way a modern edition would notate it. It is permitted to use text for this type of thing, for example “on the beat”. Or indicate it as a footnote.