Eliminate final .loadinit(...) usage.

src/QPerl6/Actions.pm

@@ -251,11 +251,12 @@ class QPerl6::Actions is HLL::Actions {
         # We'll install our view of GLOBAL as the main one; any other
         # compilation unit that is using this one will then replace it
         # with its view later (or be in a position to restore it).
-        $unit.loadinit().push(PAST::Op.new(
+        my $global_install := PAST::Op.new(
             :pasttype('bind_6model'),
             PAST::Var.new( :name('GLOBAL'), :namespace([]), :scope('package') ),
             QAST::WVal.new( :value($*GLOBALish) )
-        ));
+        );
+        $*W.add_fixup_task(:deserialize_past($global_install), :fixup_past($global_install));
 
         # Mainline should have fresh lexicals.
         $*W.get_static_lexpad($unit).set_fresh_magicals();