x86/APX: V{BROADCAST,EXTRACT,INSERT}{F,I}128 can also be expressed

Interestingly unlike VROUND{P,S}{S,D} and VPERM{F,I}128 they weren't
even present in the x86-64-apx-egpr-inval testcase, hence why I
overlooked that these can actually be encoded, (again) using suitable
AVX512 counterparts.

While there also "modernize" the adjacent AVX/AVX2 entries.