[perl #61602] Fix Integral values of Inf/NaN

[Carl Mäsak via RT]

<masak> p6: say Inf.Int; say NaN.Int
<p6eval> ..rakudo 80f140: OUTPUT«Cannot coerce Inf to an Int␤  in method 
gist at src/gen/CORE.setting:8666 [...]
* masak updates https://rt.perl.org/rt3/Ticket/Display.html?id=61602 
since the behavior has now changed