[perl #129894] 1**NaN is 1, but any numeric operation with NaN should be NaN (say 1**NaN)

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# New Ticket Created by  Aleks-Daniel Jakimenko-Aleksejev 
# Please include the string:  [perl #129894]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=129894 >


*Code:*
say 0**NaN;
say 1**NaN;
say 2**NaN;

*Output:*
NaN
1
NaN


See also IRC log: https://irclog.perlgeek.de/perl6-dev/2016-10-16#i_13412758