[perl #131305] Useless Useless Use Warning when invoking colonpaired routines

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# New Ticket Created by  Zoffix Znet 
# Please include the string:  [perl #131305]
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# <URL: https://rt.perl.org/Ticket/Display.html?id=131305 >


The `constant value [ ]` is not uselessly used here, as the warning claims:
    <Zoffix_> m: say &postcircumfix:<[ ]>([1], 0)
    <camelia> rakudo-moar 4c8136: OUTPUT: «WARNINGS for <tmp>:␤Useless use of 
constant value [ ] in sink context (lines 1, 1)␤1␤»

Can be worked around with:
    <Zoffix_> m: say ::('CORE::&postcircumfix:<[ ]>')([1], 0)
    <camelia> rakudo-moar 4c8136: OUTPUT: «1␤»