[perl #74412] [BUG] Null PMC access when accessing a variable in a class package through its long name in Rakudo

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
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<masak> alpha: class A { my $b; method c { $A::b = 5; say $A::b } }; A.new.c
<p6eval> alpha 30e0ed: OUTPUT«5␤»
<masak> rakudo: class A { my $b; method c { $A::b = 5; say $A::b } }; A.new.c
<p6eval> rakudo 78faa0: OUTPUT«Null PMC access in getprop() [...]
* masak submits rakuodbug

I'm no longer sure that this syntax will actually give me access to
the variable, but even if it doesn't the error shouldn't be a Null PMC
access.