--with-system-zlib and texdoc,lualatex,...

[Karl Berry]

    Does "recently" mean before or after texlive2024 release?

Between tl23 and tl24. Specifically, November 2023
(from luatexdir/ChangeLog):

2023-11-20  Karl Berry  <karl at freefriends.org>

        * luazlib/lzlib.c: relax zlib version check to just checking
        the major version, since (it turns out) zlib 1.3 is compatible
        with 1.2.
        https://github.com/TeX-Live/texlive-source/pull/62
        https://lists.debian.org/debian-tex-maint/2010/06/msg00074.html
        https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=581818