[6.d] 🧙‍♂️ Cast a spell of silence on $()/@()/%()
[6.d] 🧙‍♂️ Cast a spell of silence on $()/@()/%()

Per 6.d-prep[^1], remove all magick from $()/@()/%() and make them
mean the same thing as $( )/@( )/%( ) (that is, contextualizers that
call .item/.list/.hash respectively on an empty list).

Closes RT#131392 and R#1946

[1] https://github.com/perl6/6.d-prep/blob/dffa2642419a0f481591b9b64b602bfc4c4eb66b/TODO/FEATURES.md#remove--magicalness-from--and-
[2] https://rt.perl.org/Public/Bug/Display.html?id=131392
[3] https://github.com/rakudo/rakudo/issues/1946

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