[perl #75636] Hash slices not working with Array or GatherIterator

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# New Ticket Created by  Paweł Pabian 
# Please include the string:  [perl #75636]
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Erlangen build:

# testing with Array
perl6 -e 'my @t=1,2; my %h; %...@t}="one","two"; say %h.perl'
{"1 2" => ("one", "two")}

# testing with GatherIterator
perl6 -e 'my %h; %h{"12".comb(/(\d)/)}="one","two"; say %h.perl'
{"" => ("one", "two")}

In both cases it should be:
{1 => "one", 2 => "two"}