[perl #131673] `is rw` on anon parameter causes "inconsistent bind result" error

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# New Ticket Created by  Zoffix Znet 
# Please include the string:  [perl #131673]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=131673 >


Works as expected:
    23:03               m: sub ($x is rw) {}(42)
    camelia     rakudo-moar 2a8d1e: OUTPUT: «Parameter '$x' expected a 
writable container, but got Int value␤  in sub  at <tmp> line 1␤  in block 
<unit> at <tmp> line 1␤␤»

Doesn't:
    23:04               m: sub ($ is rw) {}(42)
    23:04       camelia rakudo-moar 2a8d1e: OUTPUT: «Internal error: 
inconsistent bind result␤  in sub  at <tmp> line 1␤  in block <unit> at 
<tmp> line 1␤␤»