polymod acting on lazy lists added

Refs #2632

Author: JJ

doc/Type/Int.pod6

@@ -162,6 +162,13 @@ this code that implements it:
 For a more detailed discussion, see
 L<this blog post|https://perl6.party/post/Perl6-.polymod-break-up-a-number-into-denominations>
 
+We can use lazy lists in C<polymod>, as long as they are finite:
+
+=for code
+my $some-numbers = lazy gather { take 3*$_ for 1..3 };
+say 600.polymod( $some-numbers ); # OUTPUT: «(0 2 6 3)␤»
+
+
 =head2 routine is-prime
 
 Defined as: