Fix EXPORT_SYMBOL not finding @*PACKAGES

Instead of having the package stack in a dynvar, in RakuAST, the resolver
carries the package stack.

src/Raku/Actions.nqp

@@ -1008,7 +1008,7 @@ class Raku::Actions is HLL::Actions does Raku::CommonActions {
         # etc.)
         $*PACKAGE.ensure-begin-performed($*R);
 
-        # Let the resovler know which package we're in.
+        # Let the resolver know which package we're in.
         $*R.push-package($*PACKAGE);
     }
 

src/Raku/ast/resolver.rakumod

@@ -83,6 +83,13 @@ class RakuAST::Resolver {
         Nil
     }
 
+    # Current package stack as NQP list
+    method packages() {
+        my $result := nqp::create(List);
+        nqp::bindattr($result, List, '$!reified', $!packages);
+        $result
+    }
+
     # Name-mangle an infix operator and resolve it.
     method resolve-infix(Str $operator-name) {
         self.resolve-lexical('&infix' ~ self.IMPL-CANONICALIZE-PAIR('', $operator-name))

src/core.c/Rakudo/Internals.pm6

@@ -166,7 +166,7 @@ my class Rakudo::Internals {
     method EXPORT_SYMBOL(Str:D $name, @tags, Mu \sym) {
         $export-symbol-lock.protect: {
             my @export_packages = $*EXPORT;
-            for nqp::hllize(@*PACKAGES).list {
+            for $*R ?? $*R.packages !! nqp::hllize(@*PACKAGES).list {
                 my $who := .WHO;
                 @export_packages.append: $who.EXISTS-KEY('EXPORT')
                   ?? $who.AT-KEY('EXPORT')