biology/gkl: mark broken on aarch64

multiple errors in the log like:
/usr/lib/clang/19/include/ia32intrin.h:312:10: error: use of undeclared identifier '__builtin_ia32_readeflags_u32'

PR: 293534
Reported-by: https://portsfallout.com/fallout?port=biology%2Fgkl%24
Approved-by: yuri@ (maintainer)