[perl #128905] [BUG] Some core Routines do not do Callable role

[Zoffix Znet via RT]

Looks like this bug affects subroutines too:

m: say &defined ~~ Callable
rakudo-moar 3e1382: OUTPUT: «False␤» 

m: say [0,1,2,Any].grep(&defined)
rakudo-moar 3e1382: OUTPUT: «Cannot resolve caller 
ACCEPTS(Sub+{<anon|56691824>}: Int); <redacted>