[perl #132119] [BUG] .perl of parameterized Hash loses scalarization

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# New Ticket Created by  Zoffix Znet 
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The .perl of a default Hash correctly shows when the hash has been scalarized:

    $ perl6 -e 'my %h := {:42a}; my $h = %h; say %h.perl; say $h.perl'
    {:a(42)}
    ${:a(42)}


However, the same distinction does not show up when using a parametarized Hash:

    $ perl6 -e 'my %h := :{:42a}; my $h = %h; say %h.perl; say $h.perl'
    :{:a(42)}
    :{:a(42)}

    $ perl6 -e 'my %h := Hash[Int,Str].new: :42a.Pair; my $h = %h; say %h.perl; 
say $h.perl'
    (my Int %{Str} = :a(42))
    (my Int %{Str} = :a(42))


It should show $(:{:a(42)}) and, I'm guessing, $(my Int %{Str} = :a(42)) for $h