In 55481 the recursion was fixed but backquotes and comma(-at)s were
left as-is, so as to print comma(-at)s specially only if they are
escaping a backquote.

This is not particularly useful (and I would argue is bad), so something
like the attached patch could be a good starting point to make it so
that they are always printed specially (given `print-quoted' is non-nil
and it is a proper list of length two - the usual checks for other
quoted forms), which also solves(maybe? - it was not the primary goal)
the recursion.  Feel free to change or drop whatever.