Build failure against FLINT main `fmpz_mod_mpoly_compose_fmpz_mod_mpoly_gen`

[oscarbenjamin]

https://github.com/flintlib/python-flint/actions/runs/11132743136/job/30937294138?pr=231

      src/flint/types/fmpz_mod_mpoly.cpython-312-x86_64-linux-gnu.so.p/src/flint/types/fmpz_mod_mpoly.pyx.c:1235:61: error: expected identifier or ‘(’ before ‘void’
       1235 |     #define fmpz_mod_mpoly_compose_fmpz_mod_mpoly_gen(...) (void)0
            |   

CC @Jake-Moss

I guess we need an update after flintlib/flint#2068