[perl #67222] [BUG] the value of $/ in closures in the second argument of .=subst calls is all wrong in Rakudo

[Christian Bartolomaeus via RT]

> <lue> r: $_ = "(foo,bar,(baz))"; .=subst( /<-[(),]>+/, { "'$/'" }, :g
> ); .say
> <camelia> rakudo-jvm 20193f: OUTPUT«(timeout)»
> <camelia> ..rakudo-parrot 20193f, rakudo-moar 20193f:
> OUTPUT«('foo','bar',('baz'))␤»
> 
> Verified same result for rakudo-jvm locally.

Since there is a passing test in S05-substitution/67222.t (which is in 
t/spectest.data), I'm closing this ticket now.