[perl #131300] [BUG] MoarVM panic if you check for membership in undefined Set

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# New Ticket Created by  Curt Tilmes 
# Please include the string:  [perl #131300]
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 m: say 1 ∈ (Set) ?? 'present' !! 'not present';
rakudo-moar dc5eec: OUTPUT: «MoarVM panic: Memory allocation failed; could
not allocate 83968 bytes␤»