C++: ptr fields now pulls the whole type if it's a member in nkDotExpr (#22855)

tests/cpp/tvirtual.nim

@@ -115,4 +115,12 @@ proc test(self: Child): Box[Inner] {.virtual, asmnostackframe.} =
   {.emit:"return res;".}
   
 
-discard Child().test() 
+discard Child().test() 
+
+import virtualptr
+
+#We dont want to pull Loo directly by using it as we are testing that the pointer pulls it. 
+proc makeMoo(): Moo {.importcpp:"{ new Loo() }".}
+
+makeMoo().loo.salute()
+