[perl #74586] Block beginning with semicolon shouldn't be a hash

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# New Ticket Created by  Moritz Lenz 
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21:24 <@moritz_> rakudo: say ({; $_ => 1}).WHAT
21:24 <+p6eval> rakudo 43f110: OUTPUT«Hash()␤»
21:25 <@moritz_> looks like a bug to me
21:25 <@colomon> yup.

I'd expect Block instead