devel/fungw: mark as broken with Perl 5.42+

cc -c -Wall -g -I../../ -I../../src_3rd -O2 -fstack-protector-strong -fno-strict-aliasing -fPIC -DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -DNO_POSIX_2008_LOCALE -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -I/usr/local/lib/perl5/5.42/mach/CORE -o fungw_perl.o fungw_perl.c
fungw_perl.c:96:43: error: no member named 'IXpv' in 'struct interpreter'

	   96 |         perl_ctx_t *ctx = (perl_ctx_t *)my_perl->perl_user_data;
	      |                                         ~~~~~~~  ^

fungw_perl.c:35:24: note: expanded from macro 'perl_user_data'

	   35 | #define perl_user_data IXpv
	      |                        ^

PR: 288020